Despite its uniform appearance, the cerebellar cortex is highly heterogeneous in terms of structure, genetics and physiology. Purkinje cells (PCs), the principal and sole output neurons of the cerebellar cortex, can be categorized into multiple populations that differentially express molecular markers and display distinctive physiological features. Such features include action potential rate, but also their propensity for synaptic and intrinsic plasticity. However, the precise molecular and genetic factors that correlate with the differential physiological properties of PCs remain elusive. In this (...) article, we provide a detailed overview of the cellular mechanisms that regulate PC activity and plasticity. We further perform a pathway analysis to highlight how molecular characteristics of specific PC populations may influence their physiology and plasticity mechanisms. (shrink)

Phenotypic plasticity integrates the insights of ecological genetics, developmental biology, and evolutionary theory. Plasticity research asks foundational questions about how living organisms are capable of variation in their genetic makeup and in their responses to environmental factors. For instance, how do novel adaptive phenotypes originate? How do organisms detect and respond to stressful environments? What is the balance between genetic or natural constraints (such as gravity) and natural selection? The author begins by defining phenotypic plasticity and detailing its history, including (...) important experiments and methods of statistical and graphical analysis. He then provides extended examples of the molecular basis of plasticity, the plasticity of development, the ecology of plastic responses, and the role of costs and constraints in the evolution of plasticity. A brief epilogue looks at how plasticity studies shed light on the nature/nurture debate in the popular media. (shrink)

In recent years, many scholars have suggested that the Baldwin effect may play an important role in the evolution of language. However, the Baldwin effect is a multifaceted and controversial process and the assessment of its connection with language is difficult without a formal model. This paper provides a first step in this direction. We examine a game-theoretic model of the interaction between plasticity and evolution in the context of a simple language game. Additionally, we describe three distinct aspects of (...) the Baldwin effect: the Simpson– Baldwin effect, the Baldwin expediting effect and the Baldwin optimizing effect. We find that a simple model of the evolution of language lends theoretical plausibility to the existence of the Simpson– Baldwin and the Baldwin optimizing effects in this arena, but not the Baldwin expediting effect. (shrink)

The doctrine that the character of our perceptual knowledge is plastic, and can vary substantially with the theories embraced by the perceiver, has been criticized in a recent paper by Fodor. His arguments are based on certain experimental facts and theoretical approaches in cognitive psychology. My aim in this paper is threefold: to show that Fodor's views on the impenetrability of perceptual processing do not secure a theory-neutral foundation for knowledge; to show that his views on impenetrability are almost certainly (...) false; and to provide some additional arguments for, and illustrations of, the theoretical character of all observation judgments. (shrink)

and apply it to various examples of neural plasticity in which input is rerouted intermodally or intramodally to nonstandard cortical targets. In some cases but not others, cortical activity ‘defers’ to the nonstandard sources of input. We ask why, consider some possible explanations, and propose a dynamic sensorimotor hypothesis. We believe that this distinction is important and worthy of further study, both philosophical and empirical, whether or not our hypothesis turns out to be correct. In particular, the question of how (...) the distinction should be explained is linked to explanatory gap issues for consciousness. Comparative and absolute explanatory gaps should be distinguished: why does neural activity in a particular area of cortex have this qualitative expression rather than that, and why does it have any qualitative expression at all? We use the dominance/deference distinction to address the comparative gaps, both intermodal and intramodal. We do so not by inward scrutiny but rather by expanding our gaze to include relations between brain, body and environment. (shrink)

Merleau-Ponty’s explication of concrete or practical movement by way of the Schneider case could be read as ending up close to automatism, neglecting its flexibility and plasticity in the face of obstacles. It can be contended that he already goes off course in his explication of Schneider’s condition. Rasmus Jensen has argued that he assimilates a normal person’s motor intentionality to the patient’s, thereby generating a vacuity problem. I argue that Schneider’s difficulties with certain movements point to a means of (...) broadening Merleau-Ponty’s account of concrete movement, one that he broaches without exploiting. What could do more work is his recognition of a transposition capacity - and hence of a plasticity - in the healthy body’s skill schema. As well as avoiding vacuity, he could forestall the appearance of a dichotomy between practical coping and creativity. (shrink)

This paper considers the connections between semantic shiftiness (plasticity), epistemic safety and an epistemic theory of vagueness as presented and defended by Williamson (1996a, b, 1997a, b). Williamson explains ignorance of the precise intension of vague words as rooted in insensitivity to semantic shifts: one’s inability to detect small shifts in intension for a vague word results in a lack of knowledge of the word’s intension. Williamson’s explanation, however, falls short of accounting for ignorance of intension.

The growing field of evo-devo is increasingly demonstrating the complexity of steps involved in genetic, intracellular regulatory, and extracellular environmental control of the development of phenotypes. A key result of such work is an account for the remarkable plasticity of organismal form in many species based on relatively minor changes in regulation of highly conserved genes and genetic processes. Accounting for behavioral plasticity is of similar potential interest but has received far less attention. Of particular interest is plasticity in communication (...) systems, where human language represents an ultimate target for research. The present paper considers plasticity of language capabilities in a comparative framework, focusing attention on examples of a remarkable fact: Whereas there exist design features of mature human language that have never been observed to occur in non-humans in the wild, many of these features can be developed to notable extents when non-humans are enculturated through human training. These examples of enculturated developmental plasticity across extremely diverse taxa suggest, consistent with the evo-devo theme of highly conserved processes in evolution, that human language is founded in part on cognitive capabilities that are indeed ancient and that even modern humans show self-organized emergence of many language capabilities in the context of rich enculturation, built on the special social/ecological history of the hominin line. Human culture can thus be seen as a regulatory system encouraging language development in the context of a cognitive background with many highly conserved features. (shrink)

In Reading in the Brain, Stanislas Dehaene presents a compelling account of how the brain learns to read. Central to this account is his neuronal recycling hypothesis: neural circuitry is capable of being ‘recycled’ or converted to a different function that is cultural in nature. The original function of the circuitry is not entirely lost and constrains what the brain can learn. It is argued that the neural niche co-evolves with the environmental niche in a way that does not undermine (...) the core ideas of neuronal recycling, but which is quite different from the models of cognitive and cultural evolution provided by evolutionary psychology and epidemiology. Dehaene contrasts neuronal recycling with a naïve model of the brain as a general learning device that is unconstrained in what it can learn. Consequently a tension develops in Dehaene's account of the role of plasticity in the acquisition of language. It is argued that the functional and structural changes in the brain that Dehaene documents in great detail are driven by learning and that this learning-driven plasticity does not commit us to a naïve model of the brain. (shrink)

In a recent paper, Chunghyoung Lee argues that, because zygotes are developmentally plastic, they cannot be numerically identical to the singletons into which they develop, thereby undermining conceptionism. In this short paper, I respond to Lee. I argue, first, that, on the most popular theories of personal identity, zygotic plasticity does not undermine conceptionism, and, second, that, even overlooking this first issue, Lee’s plasticity argument is problematic. My goal in all of this is not to take a stand in the (...) abortion debate, which I remain silent on here, but, rather, to push for the conclusion that transitivity fails when we are talking about numerical identity of non-abstract objects. (shrink)

Ghosh introduces the term 'plastic turn' and gives a new direction for how we can interpret and experience the turn today. By what he calls the material-aesthetic, he opens up a fresh direction in our experience and understanding of plastic through the correspondence that plastic as a material brings with the aesthetic that it inspires and figures"-.

Most meanings we express belong to large families of variant meanings, among which it would be implausible to suppose that some are much more apt for being expressed than others. This abundance of candidate meanings creates pressure to think that the proposition attributing any particular meaning to an expression is modally plastic: its truth depends very sensitively on the exact microphysical state of the world. However, such plasticity seems to threaten ordinary counterfactuals whose consequents contain speech reports, since it is (...) hard to see how we could reasonably be confident in a counterfactual whose consequent can be true only if a certain very finely tuned microphysical configuration obtains. This essay develops the foregoing puzzle and explores several possible solutions. (shrink)

In this article, I explore the relationship betweenperformativity, as it appears in Judith Butler's work, andplasticity, as it appears in the work of Catherine Malabou. I argue that these concepts are isomorphic. Butler and Malabou both hold that resistance to contemporary forms of power, or “insubordination,” is contingent on a subject's ability to become other than what it is; Butler articulates this ability in terms of performativity, and Malabou articulates it in terms of plasticity. I reveal the social-constructivist dimension of (...) Malabou's work while also making apparent the extent to which Butler's work, contrary to her own way of conceptualizing it, and hence surprisingly and uneasily, presupposes a biologically basic capacity for change. Plasticity is this biologically basic capacity. Both thinkers affirm the idea that insubordinate forms of transformation can be impeded by the discourse that conditions what a subject can think. I suggest that this is an insight that must be heeded, even as I seek to affirm a form of plasticity beyond discourse. (shrink)

Probably colour is the best worked-out example of allegedly neurophysiologically innate response categories determining percepts and percepts determining concepts, and hence biology fixing the basic categories implicit in the use of language. In this paper I argue against this view and I take C. L. Hardin's Color for Philosophers [1988] as my main target. I start by undermining the view that four unique hues stand apart from all other colour shades (Section 2) and the confidence that the solar spectrum is (...) naturally divided into four categories (Section 3). For such categories to be truly universal, they have to be true for all peoples and in Section 4 I show that Berlin and Kay's [1969] widely quoted theory of basic colour categories is not sufficiently supported to lend it any credibility.Having disposed of the view that inspection of language or ‘pure’ perception unveils the universal colour categories. I turn to neurophysiological and psychophysical theories of colour vision to see whether they provide a more solid basis for deciding what the innate response categories are. In Section 5 I show that Hardin's account of the opponent-process theory neither supports his view that ‘colour-coding’takes place early in the visual neural pathway, nor his view that knowledge of colour vision science will help us solve many philosophical mysteries about colour.In Section 6 I give a more detailed review of what is known today about the neurophysiology of colour vision and I show that there's nothing in the brain which could be called a colour module, let alone a module with homunculi for particular basic colour categories. In Section 7 I show that psychophysical models do not support such rigid constraints on category formation either. Hence (Section 8), at least in the case of colour, current science supports a plasticity in the formation of categories that goes far beyond the requirements of those naturalistic philosophers who would like to ground primitive concepts in biology. (shrink)

This chapter contains section titled: Introduction: What is Phenotypic Plasticity? Developmental Conversion and Developmental Sensitivity: Two Forms of Phenotypic Plasticity Environmental Heterogeneity, Cues, and Plasticity Phenotypic Plasticity and Developmental Buffering The Future of Phenotypic Plasticity Research Acknowledgments References Further Reading.

After defining plasticity in terms of its active embodiments, Malabou applies the notion to the work of Hegel, Heidegger, Levinas, Levi-Strauss, Freud, and ...

ABSTRACT Education appears to bear responsibility on the one hand to do justice to society’s need for reproduction and continuation, and on the other to do justice to the individual’s capacity for and need to express resistance, critique and political action. How we navigate this problem is tied to how we understand justice. ‘Plastic justice’ is the suggestion that questions concerning justice and education might find a materialist expression instead of the usual transcendental ideals of justice. In this perspective, ‘justice’ (...) appears not as an achievable ideal but as a philosophical void that allows us to identify and react to injustice. An example of this is the void that allows for social selection – in the form of admissions or exams – that must be kept open if we wish to avoid encouraging social conformism and reproduction. (shrink)

The basic problem of perceptual change is how to account for both variation and constancy in perceiving the world. Is order learned? How deep does plasticity go in that respect? I argue that different kinds of perceptual plasticity have been confused in recent debates, notably between J. Fodor and P. M. Churchland. By focusing on changes in the use of concepts, the issues in the Fodor-Churchland debate can be resolved. Beyond that debate, I propose a generalized encoding approach to perception (...) as a way of accounting for a significant form of perceptual change. (shrink)

This article examines Catherine Malabou’s philosophical concept of plasticity as a new materialist methodology. Given that plasticity simultaneously maintains the ability to receive, give, and annihilate form, plasticity and plastic readings offer material-discursive possibilities for educational research. This article begins by discussing the evolution of plasticity, applications thereof, and its location within new materialist philosophy. To then demonstrate the possibilities of plasticity, this article takes the example of educational policy reform in relation to technology-centered models of education. A plastic reading (...) of ongoing policy discourses argues that conceptualizing policy, stakeholders, and technology as plastic contribute new scholarly understandings regarding the shape and movement of educational policy formation. Significantly, the methodology of plastic readings provides an ideal lens through which to approach educational policy development as a series of entangled ideas and interests. In addition, plastic readings enable the re-envisioned types of analysis and critique increasingly called for by qualitative methodologists and new materialist scholars. (shrink)

Neural plasticity has been invoked as a powerful argument against nativism. However, there is a line of argument, which is well exemplified by Pinker and more recently by Laurence and Margolis The conceptual mind: new directions in the study of concepts, MIT, Cambridge, 2015) with respect to concept nativism, according to which even extreme cases of plasticity show important innate constraints, so that one should rather speak of “constrained plasticity”. According to this view, cortical areas are not really equipotential, they (...) perform instead different kinds of computation, follow essentially different learning rules, or have a fixed internal structure acting as a filter for specific categories of inputs. We intend to analyze this argument, in the light of a review of current neuroscientific literature on plasticity. Our conclusion is that Laurence and Margolis are right in their appeal to innate constraints on connectivity—a thesis that is nowadays welcome to both nativists and non-nativists —but there is little support for their claim of further innate differentiation between and within cortical areas. As we will show, there is instead strong evidence that the cortex is characterized by the indefinite repetition of substantially identical computational units, giving rise in any of its portions to Hebbian, input-dependent plasticity. Although this is entirely compatible with the existence of innate constraints on the brain’s connectivity, the cerebral cortex architecture based on a multiplicity of maps correlating with one another has important computational consequences, a point that has been underestimated by traditional connectionist approaches. (shrink)

In this paper, I present an emerging explanatory framework about ageing and care. In particular, I focus on how, in contrast to most classical accounts of ageing, biomedicine today construes the ageing process as a modifiable trajectory. This framing turns ageing from a stage of inexorable decline into the focus of preventive strategies, harnessing the functional plasticity of the ageing organism. I illustrate this shift by focusing on studies of the demographic dynamics in human population, observations of ageing as an (...) intraspecifically heterogenous phenotype, and the experimental manipulation of longevity, in both model organisms and humans. I suggest that such an explanatory framework about ageing creates the epistemological conditions for the rise of a peculiar form of prevention that does not aim to address a specific condition. Rather it seeks to stall the age-related accumulation of molecular damage and functional deficits, boosting individual resilience against age-related decline. I call this preventive paradigm “ground-state prevention.” While new, ground-state prevention bears conceptual resemblance to forms of medical wisdom prominent in classic Galenic medicine, as well as in the Renaissance period. (shrink)

In Subjects That Matter, Namita Goswami attends to philosophy’s institutional and disciplinary failures to reconcile its identitarian claims to universality and reason with the feminist and postcolonial modes of thinking it traditionally keeps at bay. This essay places Goswami’s critique within a context of “the thought from outside,” which, beginning with Foucault’s reading of Blanchot, continuing through the geopolitics of Dussel’s philosophy of liberation, and prominent in Catherine Malabou’s conceptualization of plasticity, demonstrates how political critiques of philosophical hegemony contain an (...) implicit theorization of “literature.” If “literature” gives voice to the thought from outside, does it in turn “decolonize” philosophy? If so, what itinerary of thought ought to follow the relationship between this literary decolonization of philosophy and its imbrication within the fold of philosophical thought? How to conceptualize the plastic relation between inside and outside, between center and periphery, without subordinating the latter to the hegemony of the former? This essay argues for a coherence between Goswami’s and Malabou’s materialist understandings of difference and a conceptualization of literature as an “outside” to philosophy that operates “excentrically” “inside” philosophy. (shrink)

Imbalanced plasticity of neural networks in the brain is proposed to underlie deficits in the integration of efferent and afferent processes in schizophrenia. These deficits affect the priming of the behavior implementing systems by prior knowledge, and thus impair both controlled regulation and automatic activation of mental and motor processes. The sense of self as a distinct entity can consequently be undermined. In predominantly reality-distorting patients, hypo-plasticity of neural connectivity may cause the emergence of highly focused but inflexible patterns of (...) activation in their representation and response systems. This may lead to dominance of prepotent patterns of activity in these systems and a relative inability of higher control systems to bias lower level activity towards congruence with the ongoing cognitive and motor context. By contrast, predominantly disorganized patients are characterized by hyper-plastic connectivity. This leads to a weakening of prepotent response tendencies but also, as in reality-distorting patients, to less effective top-down contextual constraining. (shrink)

The paper describes the context and the origin of a particular debate that concerns the evolution of phenotypic plasticity. In 1965, British biologist A. D. Bradshaw proposed a widely cited model intended to explain the evolution of norms of reaction, based on his studies of plant populations. Bradshaw’s model went beyond the notion of the “adaptive norm of reaction” discussed before him by Dobzhansky and Schmalhausen by suggesting that “plasticity” the ability of a phenotype to be modified by the environment (...) should be genetically determined. To prove Bradshaw’s hypothesis, it became necessary for some authors to identify the pressures exerted by natural selection on phenotypic plasticity in particular traits, and thus to model its evolution. In this paper, I contrast two different views, based on quantitative genetic models, proposed in the mid-1980s: Russell Lande and Sara Via’s conception of phenotypic plasticity, which assumes that the evolution of plasticity is linked to the evolution of the plastic trait itself, and Samuel Scheiner and Richard Lyman’s view, which assumes that the evolution of plasticity is independent from the evolution of the trait. I show how the origin of this specific debate, and different assumptions about the evolution of phenotypic plasticity, depended on Bradshaw’s definition of plasticity and the context of quantitative genetics. (shrink)

This essay defends the view that, as embodied, our identities are necessarily dependent on the aesthetic environment. Toward this end, it examines the renewal of the concept of sensation (aisthesis) in phenomenology, but then concludes that the methodology and metaphysics of phenomenology must be abandoned in favor of an ontology that sees corporeal identity as generated by the materiality of aesthetic relations. It is suggested that such an ontology is available in the work of Spinoza, which helps break down the (...) natural/ artificial and human/nonhuman distinctions, and can thereby engender an environmental ethics grounded in aesthetic relations. An explication of body/ world dependence is provided via the concept of plasticity and a properly Spinozist aesthetics is invoked, but remains to be worked out. (shrink)

Hyperplasia and hypertrophy are elements of phenotypic plasticity adjusting organ size and function. Because they are costly, we assume that they are beneficial. In this review, the authors discuss examples of tissue and organ systems that respond with plastic changes to osmotic stress to raise awareness that we do not always have sufficient experimental evidence to conclude that such processes provide fitness advantages. Changes in hydranth architecture in the hydroid Cordylophora caspia or variations in size in the anal papillae of (...) insect larvae upon changes in medium salinity may be adaptive or not. The restructuring of salt glands in ducklings upon salt‐loading is an example of phenotypic plasticity which indeed seems beneficial. As the genomes of model species are recently sequenced and the animals are easy to rear, these species are suitable study objects to investigate the biological significance of phenotypic plasticity and to study potential epigenetic and other mechanisms underlying phenotypic changes. (shrink)

After proposing the Turing Test, Alan Turing himself considered a number of objections to the idea that a machine might eventually pass it. One of the objections discussed by Turing was that no machine will ever pass the Turing Test because no machine will ever “have as much diversity of behaviour as a man”. He responded as follows: the “criticism that a machine cannot have much diversity of behaviour is just a way of saying that it cannot have much storage (...) capacity”. I shall argue that the objection cannot be dismissed so easily. The diversity exhibited by human behaviour is characterized by a kind of context-sensitive adaptive plasticity. Most of the time, human beings flexibly and fluently respond to what is relevant in a given situation. Moreover, ordinary human life involves an open-ended flow of shifting contexts to which our behaviour typically adapts in real time. For a machine to “have as much diversity of behaviour as a man” would be for that machine to keep its responses and behaviour relevant within such a flow. Merely giving a machine the capacity to store a huge amount of information and an enormous number of behaviour-generating rules will not achieve this goal. By drawing on arguments presented originally by Descartes, and by making contact with the frame problem in artificial intelligence, I shall argue that the distinctive context-sensitive adaptive plasticity of human behaviour explains why the Turing Test is such a stringent test for the presence of thought, and why it is much harder to pass than Turing himself may have realized. (shrink)

Philosophy & Social Criticism, Volume 48, Issue 8, Page 1140-1173, October 2022. This article explores the complexities of Marcuse’s philosophical anthropology in light of Foucault’s criticisms of Marcuse and the Frankfurt School. While Marcuse’s theory of human nature is grounded upon a dialectical conception of essential human potentialities striving for realization, it secretes a radically plastic conception of life that undermines all anthropological essentialism. This fundamental tension between essentialist and plastic conceptions of human nature has significant implications for rethinking Marcuse’s (...) project and legacy. (shrink)

Meaning seems to shift from context to context; how do we know when someone says "grab a chair" that an ottoman or orange crate will do, but when someone says "let's buy a chair," they won't? In Plastic Glasses and Church Fathers, Kronenfeld offers a theory that explains both the usefulness of language's variability of reference and the mechanisms which enable us to understand each other in spite of the variability. Kronenfeld's theory, rooted in the tradition of ethnoscience (or cognitive (...) anthropology), accomplishes three things. First, it distinguishes prototypic referents from extended referents. Second, it describes the various bases of semantic extensions. Finally it details how we use the situational context of usage, the linguistic context of opposition and inclusion, and the conceptual context of knowledge about the world to interpret communicative events. (shrink)

Sensation is a concept with a conflicted philosophical history. It has found as many allies as enemies in nearly every camp from empiricism to poststructuralism. Polyvalent, with an uncertain referent, and often overshadowed by intuition, perception, or cognition, sensation invites as much metaphysical speculation as it does dismissive criticism. -/- The promise of sensation has certainly not been lost on the phenomenologists who have sought to ‘rehabilitate’ the concept. In Plastic Bodies, Tom Sparrow argues that the phenomenologists have not gone (...) far enough, however. Alongside close readings of Merleau-Ponty and Levinas, he digs into an array of ancient, modern, and contemporary texts in search of the resources needed to rebuild the concept of sensation after phenomenology. He begins to assemble a speculative aesthetics that is at once a realist theory of sensation and a philosophy of embodiment that breaks the form of the ‘lived’ body. Maintaining that the body is fundamentally plastic and that corporeal identity is constituted by a conspiracy of sensations, he pursues the question of how the body fits into/fails to fit into its aesthetic environment and what must be done to increase the body’s power to act and exist. (shrink)

This chapter analyzes the notion of human nature and the concept of inner nature from the perspective of developmental systems theory. It explores the folkbiology of human nature and looks at three features associated with traits that are expressions of the inner nature that organisms inherit from their parents: fixity, typicality, teleology.

In addition to considerable debate in the recent evolutionary literature about the limits of the Modern Synthesis of the 1930s and 1940s, there has also been theoretical and empirical interest in a variety of new and not so new concepts such as phenotypic plasticity, genetic assimilation and phenotypic accommodation. Here we consider examples of the arguments and counter- arguments that have shaped this discussion. We suggest that much of the controversy hinges on several misunderstandings, including unwarranted fears of a general (...) attempt at overthrowing the Modern Synthesis paradigm, and some fundamental conceptual confusion about the proper roles of phenotypic plasticity and natural selection within evolutionary theory. (shrink)

One of the most important recent developments in the study of concepts has been the resurgence of interest in nativist accounts of the human conceptual system. However, many theorists suppose that a key feature of neural organization—the brain’s plasticity—undermines the nativist approach to concept acquisition. We argue that, on the contrary, not only does the brain’s plasticity fail to undermine concept nativism, but a detailed examination of the neurological evidence actually provides powerful support for concept nativism.

The “puzzle” of emotional plasticity concerns making sense of two conflicting bodies of evidence: evidence that emotions often appear modular in key respects, and evidence that our emotions also often appear to transcend this modularity. In this paper, I argue a developmentalist approach to emotion, which builds on Karmiloff-Smith’s (1986, 1992, 1994, 2015) work on cognitive development, can help us dissolve this puzzle.

Many researchers consider language to be definitionally unique to humans. However, increasing evidence suggests that language emerged via a series of adaptations to neural systems supporting earlier capacities for visuomotor integration and manual action. This paper reviews comparative neuroscience evidence for the evolutionary progression of these adaptations. An outstanding question is how to mechanistically explain the emergence of new capacities from pre-existing circuitry. One possibility is that human brains may have undergone selection for greater plasticity, reducing the extent to which (...) brain organization is hard-wired and increasing the extent to which it is shaped by socially transmitted, learned behaviors. Mutations that made these new abilities easier or faster to learn would have undergone positive selection, and over time, the neural changes once associated with individual neural plasticity would tend to become heritable, innate, and fixed. Clearly, though, language is not entirely “innate;” it does not emerge without the requisite environmental input and experience. Thus, a mechanistic explanation for the evolution of language must address the inherent trade-off between the evolutionary pressure for underlying neural systems to be flexible and sensitive to environmental input vs. the tendency over time for continually adaptive behaviors to become reliably expressed in an early-emerging, canalized, less flexible manner. (shrink)

Because he introduces a nonplastic element in his definition of the plasticity of mental life—that is, elasticity—Freud ruins the possibility of thinking what he precisely wishes to think, the plastic coincidence between creation and destruction of form. The characterization of the death drive as “elastic” deprives it of its plastic power and of its capacity to resist the pleasure principle. If we are not able to prove that the destruction of form has and is a form, if form is always (...) on the side of Eros and of pleasure, it becomes impossible to prove that there is anything beyond the pleasure principle. (shrink)

A career-spanning collection of published and unpublished writings from one of today's leading French philosophers 25 essays showcase Malabou's rounded philosophical project: 17 previously published and 8 brand newDemonstrates the interdisciplinary range and expansive applicative scope of her concept of plasticity Presents a full portrait of Malabou's philosophy which shows her project as a coherent conceptual problem rather than a collection of disparate topics and themesIncludes a critical introduction by Malabou expert Ian JamesCatherine Malabou is one of the foremost, most (...) innovative intelligences working in contemporary French philosophy today. Her work articulates a coherent conceptualisation of 'plasticity' by merging recent neurobiology and medicinal sciences with the history of philosophy and political theory.Across the essays gathered in Plasticity: The Promise of Explosion, Malabou carves a philosophical space between structuralism, deconstruction, cognitive psychology, psychoanalysis and speculative realism. By demonstrating the plastic transformability at the heart of these disciplines, a change that always promises future explosion, Malabou, as a female philosopher, also articulates the need to 'change difference' within patriarchal concepts of tradition itself.The collection is divided into four thematic parts, each of which showcases a major aspect of Malabou's conceptualisation of plasticity. In his introduction, Ian James situates Malabou's work within contemporary philosophy and navigates the contours of her unique work.--Back cover. (shrink)

The study of phenotypic plasticity has progressed significantly over the past few decades. We have moved from variation for plasticity being considered as a nuisance in evolutionary studies to it being the primary target of investigations that use an array of methods, including quantitative and molecular genetics, as well as of several approaches that model the evolution of plastic responses. Here, I consider some of the major aspects of research on phenotypic plasticity, assessing where progress has been made and where (...) additional effort is required. I suggest that some areas of research, such the study of the quantitative genetic underpinning of plasticity, have been either settled in broad outline or superseded by new approaches and questions. Other issues, such as the costs of plasticity are currently at the forefront of research in this field, and are likely to be areas of major future development. (shrink)

Studies comparing movement-related cortical potentials, post-excitatory inhibition after transcranial magnetic brain stimulation, and PET findings in normal controls and patients with cerebellar degeneration demonstrate plasticity of cerebro-cerebellar interactions and hereby support Thach's theory that the cerebellum has the ability to play a role in building behavioral context-response linkages and to build up appropriate responses from simpler constitutive elements, [THACH].

The article presents an account of the visual relations created by garments through their plastic formants, examining the role played by form, material, and composition in creating body hierarchies that produce prescribed behaviors between different subjects. The work dissects the concept of thematic role from Greimasian theory, investigating the manners in which an eighteenth-century wedding dress presents the chaining of programs governing materials, garments, and the body in the production of narrative interactions between subjects. The work utilizes a combination of (...) Greimas’ method with the Visual Semiotics continued by Floch and Oliveira, as well as Hammad’s Semiotics of Space which permit the exam of optical relations created in the body through its clothing – relations that can be read as manifesting values that are both historically and socially determined, or in the act of apprehension of an object. The eighteenth century provides a type of “original” case, whose results are pertinent to a broader study of the relations between body and dress: the work concludes with the understanding that Fashion changes through the transit of values and roles invested in the body and dress – a set of changes closely linked to the construction of social roles. (shrink)

This paper attempts to reintegrate the concept of plasticity into educational philosophy. Although John Dewey used the concept in Democracy and Education it has not generated much of a critical or practical legacy in educational thought. French philosopher, Catherine Malabou, is the first to think plasticity rigorously and seriously in a contemporary philosophical context and this paper outlines her thinking on it as well as considering its applicability to education. My argument is that her definition not only successfully reintroduces the (...) concept in a way which is generative for contemporary educational philosophy and practice but that it also significantly extends the remit of educational plasticity as previously conceived by Dewey. This paper will examine the concept of educational plasticity as providing an opportunity as well as ‘the feeling of a new responsibility’ towards the plastic subject in philosophical approaches to education. (shrink)

Peirce’s architectonics, far from rigid, is bended by many plastic transformations, deriving from the cenopythagorean categories, the pragmaticist (modal) maxim, the logic of abduction, the synechistic hypotheses and the triadic classification of sciences, among many other tools capable of molding knowledge. Plasticity, in turn, points to interlacements between mathematics and art, and shapes some associated conceptual forces in the boundary of the disciplines: variation, modulation and invariance; transformability, continuity and discreteness; creative emergence. In this article we focus on this third (...) aspect, through bounded, well defined case studies in the Logic Notebook. The first section describes the manuscript and its interest for a study of creativity, leading to a short speculation on “creative reason” and “plastic imagination” in Peirce. The second section studies five precise cases of creative emergence in the Logic Notebook: differential relatives, existential graphs, sequence diagrams, triadic logic, translatability. Some major surprises occur in those detailed studies. (shrink)

Does sovereignty have a future in the 21st century? Through a sustained engagement with the work of the Italian philosopher Giorgio Agamben, and against the background of contemporary political phenomena, Arne De Boever explores what positive political possibilities the notion of sovereignty might still hold. Using the philosophy of Catherine Malabou, he argues that these possibilities reside in an aesthetic reconceptualisation of sovereignty as a plastic power that is able to give, receive and explode the forms of our political future.

In the developing and adult cortex, just as in the adult hippocampus, LTP is unable to account for a variety of types of functional plasticity.

Some scientists and philosophers claimed that there is a converse to multiple realizability. While a given higher-level property can be realized by different lower-level properties (multiple realizability), a given lower-level property can in turn serve to realize different higher-level properties (this converse I dubbed the unfortunately obscure "constructival plasticity" to emphasize the constructive metaphysics involved in this converse to multiple realizability). I began by defining multiple realizabilty in a formal way. (Looking back, one point of interest is that I defined (...) modally weak and strong versions of realization, which is relevant to later views about contingent versus necessitarian grounding.) I then turned to the relation in question. By my analysis, for the converse claim to be true, a lower-level property G1 that realizes a higher-level F must be taken in conjunction with some other base condition G2 so that a difference in G2 allows G1 to determine some other higher-level property E but not F (otherwise there would be violations of supervenience). The realization law thus has the form: (G1 & G2) => F. As such, the base property G1 is insufficient by itself to produce F. It is an insufficient but necessary part of a sufficient condition. I also point out that this makes the realization base property an INUS condition, if combined with multiple realizability. Specifically, if F is multiply realized by properties other than the pair G1 and G2, then G1 is an insufficient but necessary part of an unnecessary but sufficient condition. This is just the first clear and explicit INUS condition view of realization in the literature. Looking back, this converse is also relevant to later views, such as Robert Wilson's view about metaphysically contextual realization. (shrink)

A former student and collaborator of Jacques Derrida, Catherine Malabou has generated worldwide acclaim for her progressive rethinking of postmodern, Derridean critique. Building on her notion of plasticity, a term she originally borrowed from Hegel's _Phenomenology of Spirit_ and adapted to a reading of Hegel's own work, Malabou transforms our understanding of the political and the religious, revealing the malleable nature of these concepts and their openness to positive reinvention. In French to describe something as plastic is to recognize both (...) its flexibility and its explosiveness-its capacity not only to receive and give form but to annihilate it as well. After defining plasticity in terms of its active embodiments, Malabou applies the notion to the work of Hegel, Heidegger, Levinas, Levi-Strauss, Freud, and Derrida, recasting their writing as a process of change between dialectic and deconstruction. Malabou contrasts plasticity against the graphic element of Derrida's work and the notion of trace in Derrida and Levinas, arguing that plasticity refers to sculptural forms that accommodate or express a trace. She then expands this analysis to the realms of politics and religion, claiming, against Derrida, that "the event" of justice and democracy is not fixed but susceptible to human action. (shrink)

A response to Via about the existence (or not) and role of plasticity genes in evolution.

Contrary to assumptions that changes in brain networks are possible only during crucial periods of development, research in the past decade has supported the idea of a permanently plastic brain. Novel experience, altered afferent input due to environmental changes and learning new skills are now recognized as modulators of brain function and underlying neuroanatomic circuitry. Given findings in experiments with animals and the recent discovery of increases in gray and white matter in the adult human brain as a result of (...) learning, the old concept of cognitive reserve, that is the ability to reinforce brain volume in crucial areas and thus provide a greater threshold for age-dependent deficits, has been reinforced. The challenge we face is to unravel the exact nature of the dynamic structural alterations and, ultimately, to be able to use this knowledge for disease management. Understanding normative changes in brain structure that occur as a result of environmental changes and demands is pivotal to understanding the characteristic ability of the brain to adapt. (shrink)