Background: The proprioceptive neuromuscular facilitation reciprocal contraction pattern has the potential to increase the maximum rate of torque development. However, it is a more complex resistive exercise task and may interfere with improvements in the maximum rate of torque development due to motor skill learning, as observed for unidirectional contractions. The purpose of this study was to examine the cost-benefit of using the PNF exercise technique to increase the maximum rate of torque development.Methods: Twenty-six participants completed isometric maximal extension-to-flexion or (...) flexion-only contractions at the wrist. Ten of the assigned contractions were performed on each of three sessions separated by 48-h for skill acquisition. Retention was assessed with 5 contractions performed 2-weeks after acquisition. Torque and surface electromyographic activity were analyzed for evidence of facilitated contractions between groups, as well as alterations in muscle coordination assessed across test sessions. The criterion measures were: mean maximal isometric wrist flexion toque; the maximal rate of torque development ; root-mean-square error variability of the rate of torque versus torque phase-plane; the rate of wrist flexion muscle activation ; a coactivation ratio for wrist flexor and extensor sEMG activity; and wrist flexor electromechanical delay.Results: There were no significant differences between groups with respect to maximal wrist flexion torque, dτ/dtmax or RMSE variability of torque trajectories. Both groups exhibited a progressive increase in maximal strength and in dτ/dtmax from the start of acquisition to retention. RMSE was lowest after a 2-week rest interval. There were no significant differences between groups in the rate of muscle activation or the coactivation ratio. There was a reduction in coactivation that was retained after a 2-week rest interval. Alternatively, EMD was significantly greater in the experimental group across all sessions. However, both groups had a similar pattern of improvement to the third consecutive day of testing, but returned close to baseline value after the 2-week rest interval.Discussion: The wrist extension-to-flexion contraction pattern did not result in a greater maximal rate of torque development than simple contractions of the wrist flexors. There was no difference between groups with respect to motor skill learning. The main adaptation in neuromotor control was a decrease in coactivation, not the maximal rate of muscle activation. (shrink)

La vigilancia tecnológica, que comienza como un mecanismo empresarial de captación y fidelización clientelar, ha conocido un desarrollo tecnológico tal que, junto a la obtención masiva de datos producidos de forma inconsciente y su tratamiento por la inteligencia artificial, ha permitido la anticipación de las tendencias y la supervisión constante de los deseos e intereses de los usuarios. La integración de vigilancia y consumo ha supuesto que esta lógica del mercado pueda ser entregada a la gubernamentalidad, transformando la racionalidad disciplinaria (...) estática en múltiples dinámicas de observación de una población móvil pero controlable en términos biopolíticos, de modo que el deseo y la libertad se convierten así en dimensiones activas de una economía política actual. Se ofrecen algunos ejemplos de este auténtico panoptismo digital, como puede comprobarse con el uso de navegadores, las aplicaciones financieras, la hipersegmentación de nichos de consumo o el internet de las cosas. Por último, se analiza el tránsito de esta vigilancia hacia una lógica de gobierno basada en la predeterminación de los intereses: es el paso del panoptismo a la gubernamentalidad. (shrink)

The fundamental principles of the classical utilitarian school characterize this trend as an administrative and legal criminology. This had two implications. On the one hand, the motives, and ultimate causes of the behavior and the unequal consequences of an arbitrary rule were ignored. On the other hand, the role of the judge was reduced to enforcing the law, while it was up to the judge to set a penalty for each offence. At the end of the nineteenth century, these principles (...) saw the gradual emergence of another punitive episteme that had emerged as a result of the colonization of the legal space by the positive sciences and etiological action programs. This was not a planned and pre-established course, but the confluence of a series of theories and programs for penal prevention that Michel Foucault summarized as the realization that the law was increasingly functioning as a norm. Now, criminality, besides being the object of scientific interest, also constitutes the indicator of a social problem and therefore its insertion in an economy of changing power. (shrink)

This edition of G. E. Moore's notes taken at Wittgenstein's seminal Cambridge lectures in the early 1930s provides, for the first time, an almost verbatim record of those classes. The presentation of the notes is both accessible and faithful to their original manuscripts, and a comprehensive introduction and synoptic table of contents provide the reader with essential contextual information and summaries of the topics in each lecture. The lectures form an excellent introduction to Wittgenstein's middle-period thought, covering a broad range (...) of philosophical topics, ranging from core questions in the philosophy of language, mind, logic, and mathematics, to illuminating discussions of subjects on which Wittgenstein says very little elsewhere, including ethics, religion, aesthetics, psychoanalysis, and anthropology. The volume also includes a 1932 essay by Moore critiquing Wittgenstein's conception of grammar, together with Wittgenstein's response. A companion website offers access to images of the entire set of source manuscripts. (shrink)

Wittgenstein’s writings and lectures during the first half of the 1930s play a crucial role in any interpretation of the relationship between the Tractatus and the Philosophical Investigations . G. E. Moore’s notes of Wittgenstein’s Cambridge lectures, 1930-1933, offer us a remarkably careful and conscientious record of what Wittgenstein said at the time, and are much more detailed and reliable than previously published notes from those lectures. The co-authors are currently editing these notes of Wittgenstein’s lectures for a book to (...) be published by Cambridge University Press. We describe the materials that make up Moore’s notes, explain their unique value, review the principal editorial challenges that these materials present, and provide a brief outline of our editorial project. (shrink)

Plato and Xenophon: Comparative Studies contains a wide variety of comparative studies of the writings of Plato and Xenophon, from philosophical, literary, and historical perspectives.

ArgumentThis paper contrasts the research strategies of two women reformers, Florence Kelley and Ellen Swallow Richards, which entailed different strategies of social reform. In the early 1890s, social activist Florence Kelley used the social survey as a weapon for legal reform of the working conditions of women and children in Chicago’s sweatshop system. Kelley’s case shows that her surveys were most effective as “grounded” knowledge, rooted in a local community with which she was well acquainted. Her social survey, re-enacted by (...) lawmakers and the press, provided the evidence that moved her target audience to legal action. Chemist and propagator of the Home Economics Movement Ellen Richards situated the social problem, and hence its solution, not in exploitative working conditions, but in the inefficient and wasteful usage of available resources by the poor. Laboratory work, she argued, would enable the development of optimal standards, and educational programs should bring these standards to the household by means of models and exhibits. With this aim, she constructed public spaces that she ran as food laboratories and sanitary experiments. Kelley and Richards thus crossed the doorsteps of the household in very different ways. While Florence Kelley entered the household to change the living and working conditions of the poor by changing the law, Richards flipped the household inside out by bringing women into hybrid public laboratory spaces to change their behavior by experiment and instruction. (shrink)

In recent years, supported by new scientific evidence, the conceptualization of cognitive reserve has been progressively enriched and now encompasses not only cognitive stimulating activities or educational level, but also lifestyle activities, such as leisure physical activity and socialization. In this context, there is increasing interest in understanding the role of psychological factors in brain health and cognitive functioning. In a previous study, we have found that these factors mediated the relationship between CR and self-reported cognitive functioning. In this study, (...) we have confirmed an association between two important constructs included in the psychological wellbeing and salutogenic models, “purpose in life” and “sense of coherence,” CR, as assessed using a questionnaire, and cognitive functioning, as evaluated using a comprehensive neuropsychological battery. Results from 888 middle-aged healthy participants from the Barcelona Brain Health Initiative indicate that both sense of coherence and CR were positively associated with verbal memory, reasoning and attention, working memory, and global cognition. Moreover, the relation between CR and cognitive functioning in the different domains is partially mediated by SoC. When we controlled for brain integrity, introducing into the model neurofilament light chain measures, the mediator role of SoC was confirmed for reasoning and attention and global cognition. However, purpose in life was not associated with cognitive functioning. These results reveal the central role of the SoC construct, which mediates the association between classic CR estimates and cognitive functions, potentially representing a modifiable target for interventions that aim to promote brain health. (shrink)

The financial crisis has led to new interest in the ethics of financial markets. In this article, we further the debate on the nature of banking contracts by showing that the fundamental subjective purposes of loan and deposit contracts are irreconcilable. Any resultant mixture of the two contracts is a legal aberration. We consider a mutual fund as an important and legitimate alternative to the common demand deposit to provide high liquidity and some yield without offering full availability of a (...) nominal sum. Besides being a close substitute for how many deposit accounts function today, the mutual fund has the additional benefit of satisfying all legal and ethical requirements. Loan and investment contracts allow for the “bank” to make use of their clients’ funds while the intents of money owners are clearly classified without running into legal or ethical problems. (shrink)

La idea de racionalidad en Michel Foucault no se refiere a un criterio de razón universal a modo de conocimiento puro y neutral, sino conjugada en plural como «racionalidades». Funciona como un régimen de verdad que no solo produce nuevos conceptos y una organización histórica de la observación, sino también dominios de regulación e intervenciones políticas y técnicas. Aplicadas a la economía punitiva, y por extensión a la del poder, las racionalidades punitivas han permitido aflorar un análisis crítico inusual de (...) los sistemas del castigo mediante diferentes conceptos en apariencia usuales que alcanzan una radicalidad inusitada en la objetivación de las redes de poder/saber, y que desbordan tanto el campo de la política penal como el de las rígidas explicaciones materialistas. En última instancia, han permitido construir un orden punitivo macrosocial y unas macroformas de dominación a partir de la diversidad de micropoderes. (shrink)

Resumen Este artículo representa un esfuerzo por pensar problemáticas recurrentes de relaciones internacionales y, específicamente, en el contexto de la Globalización, desde la perspectiva de los conceptos que Foucault desarrolló en sus textos como son la gubernamentalidad, la biopolítica y los dispositivos. Se presentan las categorías centrales del análisis foucaultiano y los desarrollos generados para las relaciones internacionales buscando comprender su especificidad y la relevancia que revisten para el análisis discursivo en torno a los Estados fallidos. Este trabajo representa un (...) avance conceptual e interpretativo para la comprensión de problemáticas que muestran la vigencia del análisis foucaultiano.The article represents an effort to think recurrent problems in international rela-tions in the context of globalization, from the perspective of concepts developed by Foucault, such as governmentality, biopolitics and dispositive. We present the central conceptions of Foucault in the field of international relations, trying to understand the importance that they have in the discourse analysis concerning failed states. This work represents an advance in the comprehension of problems that can be analyzed from a foucauldian perspective. (shrink)

We applaud Aggleton & Brown's affirmation of limbic diencephalic-hippocampal interaction as a key memory substrate. However, we do not agree with a thesis of diencephalic-hippocampal strict dedication to episodic memory. Instead, this circuitry supports the production of context-specific patterns of activation that subserve retrieval for a broad class of memory phenomena, including goal-directed instrumental behavior of animals and episodic memory of humans.

The focus on translational research in clinical trials has the potential to generate clinically relevant genetic data that could have importance to patients. This raises challenging questions about communicating relevant genetic research results to individual patients. An exploratory pharmacogenetic analysis was conducted in the international ovarian cancer phase III trial, AGO-OVAR 16, which found that patients with clinically important germ-line BRCA1/2 mutations had improved progression-free survival prognosis. Mechanisms to communicate BRCA results were evaluated, because these findings may be beneficial to (...) patients and their families. Communicating individual BRCA results was not anticipated during clinical trial design. Consequently, options were not available for patients to indicate their preference for receiving their individual results when they signed pharmacogenetic informed consent. Differences in local requirements, clinical practice, and opinion regarding the ethical aspects of how to convey genetic results to patients are all potential barriers to returning individual BRCA results to patients. Communicating the aggregate BRCA result from this study provided clinical investigators with a mechanism to disseminate the overall study finding to patients while taking individual circumstances, local guidelines and clinical practice into account. This study illustrates the importance of increasing the clarity and scope of informed consent and the need for patient engagement to ensure clinical trial participants can indicate their preference regarding receipt of potentially important individual pharmacogenetic results. This study was registered in the NCT Clinical Trial Registry under NCT00866697 on March 19, 2009, following approval from participating ethics committees. (shrink)

The aim of this paper is to further an understanding of how a soul comes to despair and how the spirit of life is wounded. This question is approached from the perspective of death – in the form of death defying acts and voluntary death – as the dialectic aspect of being and non-being. Death can be a reflection of the life lived and the experience of who I am. The relation between ego and Self determines who I am. Two (...) forms of misrelating between ego and Self will be considered. One causes a sense of omnipotence as the ego identifies with Self, and the other causes a sense of alienation as the ego renounces the Self to establish an intellectual vacuum, which becomes a substitute for lived experience. In both instances, there is a growing despair of inauthenticiy and the experience of non-being, which voluntary death and death defying acts attempt to put an end to. Both manifestations of death are attempts to resolve the imbalance between the eternal and temporal dimensions of being – to put an end to the despair of being unconscious of Self – and to affirm being. It is only when there is a conscious dialectic between ego and Self that an authentic existence becomes possible. An authentic existence represents the ongoing commitment to incarnate the human reality that exists between the world of imagination and the world as it appears to our senses. This, I argue, amounts to a spirit with soul. (shrink)

Objective: Loneliness is the subjective distress of feeling alone and has a strong impact on wellbeing and health. In addition to well-known predictors like isolation and poor health, a better understanding of the psychological determinants of loneliness would offer effective targets for future complementary interventions.Methods: In this cross-sectional observational study, we compared the explanatory power of several important risk factors of loneliness with the affective, motivational, and cognitive aspects of the Meaning in Life construct. Different nested linear models were compared (...) including socio-demographic, lifestyles, social-connectedness, and self-rated health variables, to assess the overlapping and non-overlapping explanatory power of each of them.Results: Health status and MiL were found to be the most important predictors of loneliness, followed by social connectedness and, with a much lower weight, lifestyles, and socio-demographic factors. Within the MiL factor, the most cognitive component, sense of coherence, had a greater explanatory power than the more affective and motivational ones.Conclusion: Reduced MiL, the capacity of an individual to attach “value and significance” to life, is a crucial predictor to the feeling of loneliness. These results suggest that programs aiming to combat loneliness should go well beyond situational interventions and include more cognitive, value-centered interventions that enable individuals to define and pursue a meaningful vital plan. (shrink)

IntroductionThe prefrontal cortex plays a crucial role in cognition, particularly in executive functions. Cortical reactivity measured with Transcranial Magnetic Stimulation combined with Electroencephalography is altered in pathological conditions, and it may also be a marker of cognitive status in middle-aged adults. In this study, we investigated the associations between cognitive measures and TMS evoked EEG reactivity and explored whether the effects of this relationship were related to neurofilament light chain levels, a marker of neuroaxonal damage.MethodsFifty two healthy middle-aged adults from (...) the Barcelona Brain Health Initiative cohort underwent TMS-EEG, a comprehensive neuropsychological assessment, and a blood test for NfL levels. Global and Local Mean-Field Power, two measures of cortical reactivity, were quantified after left prefrontal cortex stimulation, and cognition was set as the outcome of the regression analysis. The left inferior parietal lobe was used as a control stimulation condition.ResultsLocal reactivity was significantly associated with working memory and reasoning only after L-PFC stimulation. No associations were found between NfL and cognition. These specific associations were independent of the status of neuroaxonal damage indexed by the NfL biomarker and remained after adjusting for age, biological sex, and education.ConclusionOur results demonstrate that TMS evoked EEG reactivity at the L-PFC, but not the L-IPL, is related to the cognitive status of middle-aged individuals and independent of NfL levels, and may become a valuable biomarker of frontal lobe-associated cognitive function. (shrink)

What role do demand deposits serve in the financial system? The answer to this simple question has great implications in keeping the legal terms of the contract consistent with the demands of the financial system. Demand deposits are a perfect monetary substitute. Since money is only held to hedge against perceived uncertainty in both the timing and magnitude of future expenditures, demand deposits are demanded for the same reason. From this we derive three main conclusions. First, a financial contract similar (...) to a demand deposit cannot substitute for money. Second, full agreement to a financial contract does not create a perfect substitute for money unless it provides money’s two key characteristics: on demand and par value redemption. Finally, the demand for fractional-reserve demand deposits is fostered by an exogenous source and that demand for a good or service is not a sufficient condition to justify its legality or ethicality. (shrink)

One of the foundational problems of biochemistry concerns the conceptualisation of the relationship between the composition, structure and function of macromolecules like proteins. Part of the recent philosophical literature displays a reductionist bias, that is, the endorsement of a form of microstructuralism mirroring an out-dated biochemical conceptualisation. We shall argue that such microstructuralist approaches are ultimately committed to a potentialist form of micro-predeterminism whereby the macrostructure and function of proteins is accounted for solely in terms of the intrinsic properties and (...) potentialities of the components of the primary structure as if they were self-contained or essentially immutable entities. We shall instead suggest that a conceptualisation of the relationship between proteins’ composition, structure and function consistent with contemporary biochemical practice should account also for the causal role of the cellular, organismal and environmental relations in protein development. The analysis of the folding process we propose suggests that microstructure-laden reductionist approaches are ontologically indefensible. Rather than a potentialist form of micro-predeterminism, our analysis ultimately supports a relational-construction-based view of protein development and potentialities formation, which requires an indispensable analysis of the dynamical interplay between the micro-level of the parts and the macro-level of the relational structures of their systems. (shrink)

Depositors have perceived banks as acting unethically during the most recent recession. One area of consternation is the ambiguity of the legal obligations entailed by the deposit contract when it is backed with only fractional reserves. In this article, we apply an existing analysis of the legitimacy and ethicality of banking practices to a wider range of financial transactions, including insurance policies, securities lending, perpetual bonds, and callable loans. Securities lending in particular creates rights violations analogous to those in fractional-reserve (...) banking. Both callable loans and perpetual bonds have clear legal obligations which are not inherently problematic, though we herein clarify what these obligations are. Finally, we apply our ethical framework to demonstrate that insurance products are distinct from banking deposit contracts, and that perceived parallels between the two products underestimate these differences. (shrink)

Olympic combat sports are unconventional physical activity strategies to train middle-aged and older people with and without health problems. This systematic review aimed to assess the available body of published peer-reviewed articles related to the effects of Olympic combat sports interventions on health-related quality of life in adults aged 45 and older. The search was carried out in five generic databases until July 2021 and the protocol was registered in PROSPERO. The PRISMA guidelines were followed and the Downs and Black (...) checklist was used to assessed the methodological quality of the studies. After reviewing 1,151 records, only seven studies met the inclusion criteria, adding 212 participants with a mean age of 63.7 years. Six studies provided data to calculate the effect size in the Olympic combat sports groups. Three studies reported beneficial changes with a small ES for the total score of the health-related quality of life. Two studies reported a beneficial change with a small ES and strong ES for physical health. One study reported improvements with a small ES for emotional and functional well-being. In conclusion, interventions based on Olympic combat sports produce beneficial effects with a small and moderate ES on health-related quality of life in male and female aged 45 and older who are healthy participants, participants with Parkinson's disease, and participants with breast cancer.Systematic Review Registration:https://www.crd.york.ac.uk/prospero/, PROSPERO: CRD42021244161. (shrink)

In his writings Wittgenstein has touched upon some key aspects of aesthetic experience, of the experience of art, and of the dynamics of culture. Moreover, several lines of research in these fields have emerged and are still emerging from the roots of Wittgenstein's thought. This volume collects a number of essays on these topics by renowned international scholars (such as H.-J. Glock, J. Hyman, S. Majetschak, J. Schulte, A. Voltolini, and W. Vossenkuhl) and younger researchers. Our aim is to document (...) the presence of aesthetics across the development of Wittgenstein's thought and to present Wittgenstein's point of view, as well as new views inspired by Wittgenstein, on music, literature and poetry, the visual arts, and architecture. (shrink)

IntroductionExcitability of the primary motor cortex measured with TMS has been associated with cognitive dysfunctions in patient populations. However, only a few studies have explored this relationship in healthy adults, and even fewer have considered the role of biological sex.MethodsNinety-seven healthy middle-aged adults completed a TMS protocol and a neuropsychological assessment. Resting Motor Threshold and Long-Interval Intracortical Inhibition were assessed in the left motor cortex and related to attention, episodic memory, working memory, reasoning, and global cognition composite scores to evaluate (...) the relationship between cortical excitability and cognitive functioning.ResultsIn the whole sample, there was a significant association between LICI and cognition; specifically, higher motor inhibition was related to better working memory performance. When the sample was broken down by biological sex, LICI was only associated with working memory, reasoning, and global cognition in men. No associations were found between RMT and cognitive functions.ConclusionGreater intracortical inhibition, measured by LICI, could be a possible marker of working memory in healthy middle-aged adults, and biological sex plays a critical role in this association. (shrink)

The protein folding problem is one of the foundational problems of biochemistry and it is still considered unsolved. It basically consists of two main questions: what are the factors determining the stability of the protein’s native structure and how does the protein acquire it starting from an unfolded state. Since its first formulation, two main explanatory approaches have dominated the field of protein folding research: a thermodynamic approach focused on energetic features and a kinetic approach focused on the temporal development (...) of protein chains and structural considerations. Although these two approaches are tightly intertwined in biochemical practice and largely agree on which are the parts and activities in which the phenomenon under study should be decomposed to, there nevertheless exist important contrasts that have had repercussions on the development of the field and still engender vigorous debate. We shall analyse the historical development of the field and crucial aspects of current scientific debates. On this basis, we argue that the main sources of disagreement centre on the causal interpretation of thermodynamic and kinetic explanations, on the explanatory relevance assigned to different features of the phenomena under study and on the status of the ontological assumptions concerning the entities under study. (shrink)

In the pages of this journal, a fruitful debate has evolved on the ethical legitimacy of fractional-reserve banking. In this article, we respond to the new arguments raised by Evans as we clarify our position on the unethical and illegitimate nature of fractional-reserve banking. Fractional-reserve banking is not a recent financial innovation but represents a long-standing legal aberration. The co-mingling of two mutually exclusive financial contracts, deposit and loan, confounds the contracting parties’ purposes, intents, rights, and obligations. As a result, (...) it creates unsolvable legal difficulties and ethical dilemmas. While these problems are most evident in the case of a bank run, they also arise when trying to answer the simple question of “who owns a deposit?”. (shrink)

Psychiatry is rapidly adopting digital phenotyping and artificial intelligence/machine learning tools to study mental illness based on tracking participants’ locations, online activity, phone and text message usage, heart rate, sleep, physical activity, and more. Existing ethical frameworks for return of individual research results (IRRs) are inadequate to guide researchers for when, if, and how to return this unprecedented number of potentially sensitive results about each participant’s real-world behavior. To address this gap, we convened an interdisciplinary expert working group, supported by (...) a National Institute of Mental Health grant. Building on established guidelines and the emerging norm of returning results in participant-centered research, we present a novel framework specific to the ethical, legal, and social implications of returning IRRs in digital phenotyping research. Our framework offers researchers, clinicians, and Institutional Review Boards (IRBs) urgently needed guidance, and the principles developed here in the context of psychiatry will be readily adaptable to other therapeutic areas. (shrink)

Informed consent in medical practice is essential and a global standard that should be sought at all the times doctors interact with patients. Its intensity would vary depending on the invasiveness and risks associated with the anticipated treatment. To our knowledge there has not been any systematic review of consent practices to document best practices and identify areas that need improvement in our setting. The objective of the study was to evaluate the informed consent practices of surgeons at University teaching (...) Hospitals in a low resource setting. (shrink)

The objective of the text is to propose an interpretation of Hume's works that allows another way of refusing contractualism, different from the "official" refusal, and which is based (the new one) on the concept of artifice, which is extremely different from the artifice created by the contractualists, whose opposition the tradition of commentators of Humean political philosophy, generally, do not refer to, when it is the case of refusing contractualism.

Achille Mbembe’s book Critique of Black Reason has attracted scholarly interest and commentaries. In a conversation that took place between David Theo Goldberg and Mbembe, both men discuss some of the themes that are raised in the book. This paper examines that conversation and focuses on the idea of the archive and how the dehumanisation, damage, destruction and death that racism has visited on many black people can be resurrected, dusted down and repaired. I have used Mbembe’s idea of (...) blackness as a way into the archive to retrieve and retell a particular story and, in doing so, to repair the damage to the life of an African American man, as only writing can do. I revive the humanity and dignity of that life against the brutal racism that ultimately claimed it. This is a requiem for Mr Wilson. (shrink)

Gabriel Marcel’s thought is deeply informed by the American philosophical tradition. Marcel’s earliest work focused upon the idealism of Josiah Royce. By the time Marcel completed his Royce writings, he had moved beyond idealism and adopted a form of metaphysical realism attributed to William Ernest Hocking. Marcel also developed a longstanding relationship with the American philosopher Henry Bugbee. These important philosophical relationships will be examined through the Marcellian themes of ontological exigence, intersubjective being, and secondary reflection. Marcel’s relationships with (...) these philosophers are not serendipitous. They are expressions of Marcel’s deep Christian faith. (shrink)

This book examines the philosophy of Gabriel Marcel and its relationship to key figures in classical American philosophy, in particular Josiah Royce, William Ernest Hocking, and Henry Bugbee.

Acceptance of Augustin Fresnel's wave theory of light posed numerous questions for early nineteenth-century physicists. Among the most pressing was the problem of the properties of the luminiferous ether. Fresnel had shown that light waves were transverse. Therefore, since, among ordinary materials, only solids support transverse vibrations, there existed striking likenesses between highly tangible solids and the highly intangible ether. Accordingly, such men as Augustin-Louis Cauchy, James MacCullagh, Franz Neumann, and George Green constructed various theories of an elastic-solid ether.1 At (...) the same time, however, the disconcerting implausibilities of an all-pervasive solid provoked considerable apprehension in regard to the elastic-solid tradition. Thomas Young found the concept ‘perfectly appalling’ and argued that ‘the hypothesis [that fluids can support transverse vibrations] remains completely open for discussion, notwithstanding the apparent difficulties attending it.’2 John Herschel, probably the most important English advocate of the wave theory, regarded the concept of a solid ether as only a temporary device, useful ‘till the real truth shall be discovered.’3 Consequently, despite the accomplishments which helped to make the elastic-solid theory ‘the most celebrated special form of the wave theory’,4 there were important voices of reservation. (shrink)