Amnesia

Are occurrent states of forgetting literal experiences of absences? I situate this question within the debate on mental time travel (MTT) to understand whether these states can be explained as literal experiences of absent episodic memories. To frame my argument, I combine Barkasi and Rosen’s literal approach to MTT with Farennikova’s literal approach to the perception of absences, showing that both are built on the idea that for an experience to be literal it must afford an unmediated contact with the (...) object that constitutes it. I test the idea that forgetting affords literal experiences of mnemonic absences by considering different views of absence perception and I evaluate whether the objections raised against Farennikova’s approach also apply to my exploratory idea. I show that, while the idea resists the objections that an advocate of a cognitive approach to mnemonic absences may raise, the same does not apply to those elaborated by advocates of a metacognitive approach. Even if conceiving of occurrent states of forgetting as literal experiences of mnemonic absences sounds appealing, this idea is misleading. Therefore, I suggest conceiving of occurrent states of forgetting as states with metacognitive features, which track the absence of episodic memories from awareness in an affectively mediated way. (shrink)

Remembering and forgetting are the two poles of the memory system. Consequently, any approach to memory should be able to explain both remembering and forgetting in order to gain a comprehensive and insightful understanding of the memory system. Can an enactive approach to memory processes do so? In this article I propose a possible way to provide a positive answer to this question. In line with some current enactive approaches to memory, I suggest that forgetting –similarly to remembering– might be (...) constituted within an embodied and active process. Within this process, some simulation and re-enactment paths would acquire more relevance than others. This acquired relevance would make the activation of other paths of recall less likely, thus preventing the memory system from engaging in some episodic simulations. These changes in the likelihood of activation of some paths of recall –the forgotten ones– can be accounted for in an enactive fashion by studying both “internal” and “external” re-enactment and simulation paths. With regard to the latter, I propose to examine the process of forgetting by considering the engagement and affective relation of an embodied agent with her field of affordances. I suggest that, in the case of emotion-laden memories, the agent’s decoupling from some affordances of the environment might contribute to the process of forgetting, in that it would reduce the agent’s opportunities for situated episodic simulations. (shrink)

Patient RB has a peculiar memory impairment wherein he experiences his memories in rich contextual detail, but claims to not own them. His memories do not feel as if they happened to him. In this paper, I provide an explanatory model of RB’s phenomenology, the self-attentional model. I draw upon recent work in neuroscience on self-attentional processing and global workspace models of conscious recollection to show that RB has a self-attentional deficit that inhibits self-bias processes in broadcasting the contents of (...) episodic memories to the global workspace. Typically, self-related contents enjoy a higher salience level than other-related contents. Elimination of bias toward self-related contents diminishes the salience of those contents to the level of other-related contents. Because the typical high salience of self-related content is necessary for the feeling of ownership, RB lacks the feeling of ownership. I also discuss potential applications of the self-attentional model to other psychopathological cases. (shrink)

The discovery of the engram, the physical substrate of memory, is a central challenge for the sciences of memory. Following the application of optogenetics to the neurobiological study of memory, scientists and philosophers claim that the engram has been found. In this paper, I evaluate the implications of applying optogenetic tools to the localization of the engram. I argue that conceptions of engram localization need to be revised to be made consistent with optogenetic studies of the engram. I distinguish between (...) challenges to vehicle and content localization. First, I consider the silent engram hypothesis. According to this hypothesis, optogenetic studies indicate that synaptic efficacy, the traditional engram-bearing vehicle, is important merely for retrieval. I argue that this interpretation rests upon a misunderstanding of accessibility. Second, I argue that optogenetic-based strategies and findings conflict with preservationist and constructivist views on memory storage. There is an enduring trace, but stored content may change over time and experience, resulting in doubt about what constitutes a single engram. (shrink)

Is there a difference between recollecting episodes from the past and recalling autobiographically? Both in the philosophical and psychological literature, it does not seem that there is a consensus on whether autobiographical memories should be considered as a metaphysically equivalent concept to episodic memories or a different category of memory entirely. In this article, I give reasons to believe that autobiographical memories do not relate to the recollection of past episodes since they do not have an associated subjective experience and (...) the consequential experience of mental time travel. Autobiographical memories, I argue, are presented as a narrative that is constructed propositionally, thus differing substantially from episodic memory in its subjective property, the reference to the self, and the content in which each one is grounded. To do so, first I use data from the psychological literature on amnesic patients as evidence for both the difference in phenomenology and content. And second, I use insights from recent philosophical literature on memory and the self, to defend that what is referred here as “autobiographical memory” is indeed a different kind of memory that differs substantially from episodic memory and slightly from semantic memory. (shrink)

Barbara Montero considers whether or not we are able to remember what pain feels like. In order to properly answer this question, she introduces a new type of memory called 'qualitative memory', which seems common to exteroceptive sensations. Having concluded that there is arguably no qualitative memory for pain and other bodily sensations, Montero considers possible philosophical implications for areas including rational choice-making and empathy. In addressing the relationship between pain and memory, the paper raises an issue that has not (...) received much attention and indicates various interesting fields of research for which the apparent inability to remember pain might prove relevant. My comment primarily focuses on the core concepts of pain and qualitative memory which are foundational for the paper. I argue that a deeper engagement with some key aspects of these concepts is necessary. A more fine-grained discussion could have made Montero's argument more convincing. (shrink)

The psychoanalytical case history was in many ways the pivot point of John Forrester’s reflections on case-based reasoning. Yet the Freudian case is not without its own textual forebears. This article closely analyses texts from two earlier case-writing traditions in order to elucidate some of the negotiations by which the case history as a textual form came to articulate the mode of reasoning that we now call ‘thinking in cases’. It reads Eugène Azam’s 1876 observation of Félida X and her (...) ‘double personality’—the case that brought both Azam and Félida to prominence in late 19th-century French science—against a medico-surgical case penned by the Bordeaux physician in the same decade. While the stylistics of Azam’s medical case mirror its epistemic underpinnings in the ‘vertical’ logics of positivist science, the multiple narratives interwoven in Félida’s case grant both Azam and his patient the role of knowledge-making actors in the text. This narrative transformation chimes with the way Azam reasons ‘horizontally’ from particulars to Félida’s singular condition, but sits in tension with his choice to structure the observation along a ‘vertical’ axis. Between the two, we glimpse the emergence of the psychological observation as a mode of writing and thus of thinking in cases. (shrink)

Искусственный интеллект – последняя, хотя и иллюзорная надежда продажных и провалившихся режимов как на Западе, так и на Востоке остаться на плаву: ведь тонущий хватается и за соломинку. Но всё течёт и всё изменяется, и никаким деспотиям и деспотам не удастся остановить ход истории, как бы они этого не желали и тому не противились. Хотя у истории нет конца, но их история и история совершённых ими предательств уже закончилась. Plaudite, cives, plaudite, amici, finita est comoedia: „Рукоплещите, граждане, друзья, комедия окончена.“.

I argue that appreciation of the phenomenon of forgetting requires serious attention to its origins and place in nature. This, in turn, necessitates metaphysical inquiry as well as empirical backing – a combination likely to be eschewed by psychological orthodoxy. But, if we hope to avoid the conceptual vacuity that characterizes too much of contemporary psychological inquiry (e.g., Klein, 2012, 2014a, 2015a, 2016a), a “big picture” approach to phenomena of interest is essential. Adopting this investigative posture turns the “received view” (...) of the relation between remembering and forgetting on its head: Rather than treated as the result of breakdowns and limitations of biologically engineered systems of remembering, forgetting is accorded elevated status as the driving force behind the evolution of organic systems of information retention. (shrink)

Tradicionalmente, a questão da identidade pessoal é considerada a questão a respeito ao que faz uma pessoa ser a mesma ao longo do tempo. Recentemente, porém, atenção à experiência fenomênica trouxe uma nova perspectiva ao debate. À luz dessa mudança de perspectiva, Klein sugere que indivíduos com amnésia episódica retrógrada retêm uma noção de quem são, além de terem senso de continuidade. Ele, portanto, argumenta que a memória episódica não é necessária para se ter sensação de si mesmo diacrônica. Desafiamos (...) a conclusão de Klein apontando que existem tipos mais extremos de amnésia—amnésia psicogênica—que parecem problemáticos à sua proposta de que o senso de continuidade é suficiente para se ter sensação de si mesmo diacrônico. Esse é o caso, porque alguns exemplos de amnésia psicogênica são casos de amnésia dissociativa, que mostram que ter uma experiência consciente contínua não resolve o problema. (shrink)

Forgetting is importantly related to remembering, evidence possession, epistemic virtue, personal identity, and a host of highly-researched memory conditions. In this paper I examine the nature of forgetting. I canvass the viable options for forgetting’s ontological category, type of content, characteristic relation to content, and scale. I distinguish several theories of forgetting in the philosophy and psychology of memory literatures, theories that diverge on these options. The best theories from the literature, I claim, fail two critical tests that I develop (...) (the metacognition and prospection tests), underwriting arguments against the theories. I introduce a new theory about the state of forgetting—the learning, access failure, dispositional (LEAD) theory: to forget is to fail to access something that is both learned and either inaccessible or intended to be accessed. I argue that the LEAD theory of forgetting is the lead theory of forgetting. It passes the metacognition and prospection tests, and has several further virtues at no cost. Finally, I advocate reductionism about the process of forgetting; the process reduces wholly to states of forgetting. In particular, a process of forgetting is just a sequence of increasingly strong states of forgetting. (shrink)

Communities often respond to traumatic events in their histories by destroying objects that would cue memories of a past they wish to forget and by building artefacts which memorialize a new version of their history. Hence, it would seem, communities cope with change by spreading memory ignorance so to allow new memories to take root. This chapter offers an account of some aspects of this phenomenon and of its epistemological consequences. Specifically, it is demonstrated in this chapter that collective forgetfulness (...) is harmful. Here, the focus is exclusively on the harms caused by its contribution to undermining the intellectual self-trust of some members of the community. Further, since some of these harms are also wrongs, collective amnesia contributes to causing epistemic injustices. (shrink)

Alessandra Tanesini is a Professor of Philosophy at Cardiff University working on epistemology and philosophy of language. In this post she summarises some of her recent work on collective amnesia and epistemic injustice.

Is a painful experience less bad for you if you will not remember it? Do you have less reason to fear it? These questions bear on how we think about medical procedures and surgeries that use an anesthesia regimen that leaves patients conscious – and potentially in pain – but results in complete ‘drug-induced amnesia’ after the fact. I argue that drug-induced amnesia does not render a painful medical procedure a less fitting object of fear, and thus the prospect of (...) amnesia does not give patients a reason not to fear it. I expose three mistakes in reasoning that might explain our tendency to view pain or discomfort as less fearful in virtue of expected amnesia: a mistaken view of personal identity; a mistaken view of the target of anticipation; and a mistaken method of incorporating past evidence into calculations about future experiences. Ultimately my argument has implications for whether particular procedures are justified and how medical professionals should speak with anxious patients about the prospect of drug-induced amnesia. (shrink)

Autobiographical–episodic memory is the conjunction of subjective time, autonoetic consciousness and the experiencing self. Understanding the neural correlates of autobiographical–episodic memory might therefore be essential for shedding light on the neurobiology underlying the experience of being an autonoetic self. In this contribution we illustrate the intimate relationship between autobiographical–episodic memory and self by reviewing the clinical and neuropsychological features and brain functional imaging correlates of psychogenic amnesia – a condition that is usually characterized by severely impaired retrograde memory functioning, in (...) absence of structural brain damage as detected by standard imaging. We demonstrate that in this disorder the autobiographical–episodic memory deficits do not exist in isolation, but occur with impairments of the autonoetic self-consciousness, emotional processing, and theory of mind or executive functions. Furthermore functional and metabolic brain alterations involving regions that are agreed upon to exert crucial roles in memory processes were frequently found to accompany the psychogenic memory “loss”. (shrink)

In this paper, I argue that Stanley and Williamson’s 2001 account of knowledge-how as a species of knowledge-that is wrong. They argue that a claim such as “Hannah knows how to ride a bicycle” is true if and only if Hannah has some relevant knowledge-that. I challenge their claim by considering the case of a famous amnesic patient named Henry M. who is capable of acquiring and retaining new knowledge-how but who is incapable of acquiring and retaining new knowledge-that. In (...) the first two sections of the paper, I introduce the topic of knowledge-how and give a brief overview of Stanley and Williamson’s position. In the third and fourth sections, I discuss the case of Henry M. and explain why it is plausible to describe him as someone who can retain new knowledge-how but not new knowledge-that. In the final sections of the paper, I argue that Henry M.’s case does indeed provide a counterexample to Stanley and Williamson’s analysis of knowing-how as a species of knowing-that, and I consider and respond to possible objections to my argument. (shrink)

We examined whether midazolam impairs short-term/working memory processes. We hypothesize that prior dissociations in midazolam’s effects on short-term/working memory tasks and episodic memory tasks arise because midazolam has a larger effect on episodic memory processes than on short-term/working memory processes. To examine these issues, .03 mg/kg of participant’s bodyweight of midazolam was administered in a double-blind placebo-controlled within-participant design. Performance on the digit span and category generation/recall tasks was examined. The results of Experiment 1 demonstrated that: midazolam impaired performance on (...) the digit span task; midazolam did not impair performance on the category generation task; midazolam impaired performance on the category recall task; and midazolam’s effect on category recall was four times as large as its effect on digit span. The results of Experiment 2 demonstrated that midazolam did not impair digit span performance when the digit span task was administered at a later time. These results suggest that midazolam can impair short-term/working memory processes, but these effects are substantially smaller than midazolam’s effect on episodic memory processes. Moreover, they demonstrate that conscious awareness of materials during study is not sufficient to produce episodic memory. (shrink)

The paradigmatic bases, which sustain traditional western psychological interpretative efforts, need not be just a footnote to Plato. In this paper we introduce the Talmudic interpretative perspective, which we use to point at some weaknesses we identify in contemporary research imaginings. While the empiricist approach may be traced to Plato and the interpretative and the critical approaches may be traced to Heraclitus, we argue that the Talmudic approach is a differentiated and unique perspective that, because of its non-epistemic nature, its (...) dialogical character, and its recognition of two intermingled levels of interpretation, can make an important contribution to new ways of thinking about understanding and meaning in research. (shrink)

Just as speech can be acquired, so can it be lost. Speakers can forget words, phrases, even entire languages they once knew; over the course of time peoples, too, let go of the tongues that were once theirs, as languages disappear and give way to the others that follow them. In Echolalias, Daniel Heller-Roazen reflects on the many forms of linguistic forgetfulness, offering a far-reaching philosophical investigation into the persistence and disappearance of speech. In twenty-one brief chapters, he moves among (...) classical, medieval, and modern culture, exploring the interrelations of speech, writing, memory, and oblivion.Drawing his examples from literature, philosophy, linguistics, theology, and psychoanalysis, Heller-Roazen examines the points at which the transience of speech has become a question in the arts, disciplines, and sciences in which language plays a prominent role. Whether the subject is Ovid, Dante, or modern fiction, classical Arabic literature or the birth of the French language, structuralist linguistics or Freud's writings on aphasia, Heller-Roazen considers with clarity, precision, and insight the forms, the effects, and the ultimate consequences of the forgetting of language. In speech, he argues, destruction and construction often prove inseparable. Among peoples, the disappearance of one language can mark the emergence of another; among individuals, the experience of the passing of speech can lie at the origin of literary, philosophical, and artistic creation.From the infant's prattle to the legacy of Babel, from the holy tongues of Judaism and Islam to the concept of the dead language and the political significance of exiled and endangered languages today, Echolalias traces an elegant, erudite, and original philosophical itinerary, inviting us to reflect in a new way on the nature of the speaking animal who forgets. (shrink)

In a serial reaction time task, procedural memory was examined in Dissociative Identity Disorder . Thirty-one DID patients were tested for inter-identity transfer of procedural learning and their memory performance was compared with 25 normal controls and 25 controls instructed to simulate DID. Results of patients seemed to indicate a pattern of inter-identity amnesia. Simulators, however, were able to mimic a pattern of inter-identity amnesia, rendering the results of patients impossible to interpret as either a pattern of amnesia or a (...) pattern of simulation. It is argued that studies not including DID-simulators or simulation-free memory tasks, should not be taken as evidence for amnesia in DID. (shrink)

In this paper we argue that autobiographical memory can be conceptualized as a mental state resulting from the interplay of a set of psychological capacities?self-reflection, self-agency, self-ownership and personal temporality?that transform a memorial representation into an autobiographical personal experience. We first review evidence from a variety of clinical domains?for example, amnesia, autism, frontal lobe pathology, schizophrenia?showing that breakdowns in any of the proposed components can produce impairments in autobiographical recollection, and conclude that the self-reflection, agency, ownership, and personal temporality are (...) individually necessary and jointly sufficient for autobiographical memorial experience. We then suggest a taxonomy of amnesic disorders derived from consideration of the consequences of breakdown in each of the individual component processes that contribute to the experience of autobiographical recollection. (shrink)

Referring to a past that never was, dij vu shares a structure not only with fiction, but also with the ever more sophisticated effects of media technology. Tracing the term from the end of the nineteenth century, when it was first popularized in the pages of the Revue philosophique, Peter Krapp examines the genealogy and history of the singular and unrepeatable experience of dij vu. This provocative book offers a refreshing counterpoint to the clichid celebrations of cultural memory and forces (...) us do a double take on the sanctimonious warnings against forgetting so common in our time. Disturbances of cultural memory-screen memories, false recognitions, premonitions-disrupt the comfort zone of memorial culture: strictly speaking, dij vu is neither a failure of memory nor a form of forgetting. Krapp's analysis of such disturbances in literature, art, and mass media introduces, historicizes, and theorizes what it means to speak of an economy of attention or distraction. Reaching from the early psychoanalytic texts of Sigmund Freud to the plays of Heiner M]ller, this exploration of the effects of dij vu pivots around the work of Walter Benjamin and includes readings of kitsch and aura in Andy Warhol's work, of cinematic violence and certain exaggerated claims about shooting and cutting, of the memorial character of architecture, and of the high expectations raised by the Internet. Peter Krapp, lecturer in the Department of Cultural Studies and Comparative Literature at the University of Minnesota, coedited "Medium Cool," a special issue of the South Atlantic Quarterly on contemporary media theory. He has published in the fields of German studies, media studies, and literary theoryand, since 1995, has acted as editor of the Hydra Web site for theories of literature and media. (shrink)

Firstly, Paul Ricoeur takes a phenomenological approach to memory. He then addresses recent work by historians by reopening the question of the nature and truth of historical knowledge. Finally, he describes the necessity of forgetting as a condition for the possibility of remembering.

By utilizing new information from both clinical and experimental (lesion, electrophysiological, and gene-activation) studies with animals, the anatomy underlying anterograde amnesia has been reformulated. The distinction between temporal lobe and diencephalic amnesia is of limited value in that a common feature of anterograde amnesia is damage to part of an comprising the hippocampus, the fornix, the mamillary bodies, and the anterior thalamic nuclei. This view, which can be traced back to Delay and Brion (1969), differs from other recent models in (...) placing critical importance on the efferents from the hippocampus via the fornix to the diencephalon. These are necessary for the encoding and, hence, the effective subsequent recall of episodic memory. An additional feature of this hippocampalanterior thalamic and the perirhinal–medial dorsal thalamic systems are compromised, leading to severe deficits in both recall and recognition. (shrink)

The belief that memory is essential to the self is common. Extreme amnesia, e.g., Korsakoff Syndrome, is held to dissolve the afflicted person’s self. This belief is a misconception that rests on a confusion of epistemic with ontological relevance. Epistemically, memory is relevant to the self: a subject’s self-knowledge partly depends on memories of past experiences. However, it is not by virtue of these memories that the subject is a self: ontologically, memory is irrelevant to that status. The fact that (...) an individuals conception of herself as existing through time is wanting does not prevent that individual from being a self at a given point in time. As the past is there whether or not it is remembered, so the self is there whether or not it remembers. If instead we define the self as awareness of being a subject of experience, the self may survive even the most extreme forms of amnesia. Being a self is an important social value, a prerequisite of numerous legal or moral rights. This in itself is questionable, like the social exclusion it may entail. Denying an amnesic person a self is therefore more than a logical mistake: it is a social exclusion that can also be questioned on ethical grounds. (shrink)

The belief that memory is essential to the self is common. Extreme amnesia, e.g., Korsakoff Syndrome, is held to dissolve the afflicted person’s self. This belief is a misconception that rests on a confusion of epistemic with ontological relevance. Epistemically, memory is relevant to the self: a subject’s self-knowledge partly depends on memories of past experiences. However, it is not by virtue of these memories that the subject is a self: ontologically, memory is irrelevant to that status. The fact that (...) an individuals conception of herself as existing through time is wanting does not prevent that individual from being a self at a given point in time. As the past is there whether or not it is remembered, so the self is there whether or not it remembers. If instead we define the self as awareness of being a subject of experience, the self may survive even the most extreme forms of amnesia. Being a self is an important social value, a prerequisite of numerous legal or moral rights. This in itself is questionable, like the social exclusion it may entail. Denying an amnesic person a self is therefore more than a logical mistake: it is a social exclusion that can also be questioned on ethical grounds. (shrink)

This paper defends the claim that, in order to have a concept of time, subjects must have memories of particular events they once witnessed. Some patients with severe amnesia arguably still have a concept of time. Two possible explanations of their grasp of this concept are discussed. They take as their respective starting points abilities preserved in the patients in question: (1) the ability to retain factual information over time despite being unable to recall the past event or situation that (...) information stems from, and (2) the ability to remember at least some past events or situations themselves (typically because retrograde amnesia is not complete). It is argued that a satisfactory explanation of what it is for subjects to have a concept of time must make reference to their having episodic memories such as those mentioned under (2). It is also shown how the question as to whether subjects have such memories, and thus whether they possess a concept of time, enters into our explanation of their actions. (shrink)

Aggleton & Brown have built a convincing case that hippocampus-related circuits may be involved in thalamic amnesia. It remains to be established, however, that their model represents a distinct neurological system, that the distinction between recall and familiarity captures the roles of these pathways in episodic memory, or that there are no other systems that contribute to the signs of amnesia associated with thalamic disease.

Traumatic stress and its impact on the individual, family and society have been described in the literature for over one hundred years. Controversy exists regarding etiology, determinants and therapeutic intervention for traumatic stress. There is limited research regarding the comparative value of treatment of trauma. In 1989 Eye Movement Desensitization and Reprocessing emerged as a therapeutic intervention for traumatic stress. Studies have shown the benefits of EMDR to be equal to or superior to those of other therapies in the treatment (...) of PTSD. To date, the value of EMDR has been measured primarily by the decrease or amelioration of symptoms. Limited research has focused on the client's experience of EMDR and life changes after EMDR. The specific aim of this study was to: generate a description of the personal experience of the EMDR process, identify whether life changes had occurred after EMDR, and if any life changes had occurred describe the changes and the nature of these changes. Data were collected via unstructured interviews with seven individuals who had experienced some form of trauma, and who had experienced EMDR as a therapeutic intervention for trauma. van Manen's and Heidegger's interpretive processes were used to guide the method of data analysis. The shared meanings identified were: Set-up for Harm, Being Stuck, Willing to Risk in Spite of..., Release, Movement and Ongoing Movement. The participants all described childhood events of being put in harms way. As adults participants felt frustrated with their inability to change personal and relational alienation which resulted from the childhood events. However, in spite of incredulity and fears, risking the experience of EMDR was primarily dependent on trust in the therapist. All experienced emotional, cognitive and physical release in response to the EMDR experience which allowed participants to move forward with their lives. (shrink)