Performance of bimanual motor actions requires coordinated and integrated bilateral communication, but in some bimanual tasks, neural interactions and crosstalk might cause bilateral interference. The level of interference probably depends on the proportions of bilateral interneurons connecting homologous areas of the motor cortex in the two hemispheres. The neuromuscular system for proximal muscles has a higher number of bilateral interneurons connecting homologous areas of the motor cortex compared to distal muscles. Based on the differences in neurophysiological organization for proximal vs. (...) distal effectors in the upper extremities, the purpose of the present experiment was to evaluate how the level of bilateral interference depends on whether the bilateral interference task is performed with homologous or non-homologous effectors as the primary task. Fourteen participants first performed a unilateral primary motor task with the dominant arm with proximal and distal controlled joysticks. Performance in the unilateral condition with the dominant arm was compared to the same effector’s performance when two different bilateral interference tasks were performed simultaneously with the non-dominant arm. The two different bilateral interference tasks were subdivided into homologous and non-homologous effectors. The results showed a significant decrease in performance for both proximal and distal controlled joysticks, and this effect was independent of whether the bilateral interference tasks were introduced with homologous or non-homologous effectors. The overall performance decrease as a result of bilateral interference was larger for proximal compared to distal controlled joysticks. Furthermore, a proximal bilateral interference caused a larger performance decrement independent of whether the primary motor task was controlled by a proximal or distal joystick. A novel finding was that the distal joystick performance equally interfered with either homologous or non-homologous interference tasks performed simultaneously. The results indicate that the proximal–distal distinction is an important organismic constraint on motor control and for understanding bilateral communication and interference in general and, in particular, how bilateral interference caused by homologous vs. non-homologous effectors impacts motor performance for proximal and distal effectors. The results seem to map neuroanatomical and neurophysiological differences for these effectors. (shrink)

Individual soccer performance is notoriously difficult to measure due to the many contributing sub-variables and the variety of contexts within which skills must be utilised. Furthermore, performance differs across rather specialised playing positions. In research, soccer performance is often measured using combinations of, or even single, sub-variables. All too often these variables have not been validated against actual performance. Another approach is the use of proxies. In sports research, the age of athletes when winning championship medals has been used as (...) a proxy for determining their age of peak performance. In soccer, studies have used the average age of players in top European leagues or in the Champions League to determine the age of individual peak performance. Such approaches have methodological shortcomings and may underestimate the peak. We explore the use of a new proxy, the age at nomination for major individual awards, to determine the average age at peak individual soccer performance. A total of 1,981 players nominated for major awards from 1956 to 2019 were included, and a subset of 653 retired players was extracted, thus including players’ complete careers. Players’ average ages at nomination, at their first nomination, and at their last ever nomination were calculated, and differences across playing positions were calculated together with changes over time in the average age at peak. Based on our proxy, the age of individual peak soccer performance occurs around 27–28 years, varying across playing positions from 26 to 31 years. A player’s first peak, on average, seems to coincide with known peaks of physiological variables; their last-ever peak occurs long after physiological performance has started to decline, indicating that the decline can be compensated for by other variables. The peak age is higher than previously reported for soccer; however, it is similar to those in other team ball sports. The average age at peak performance has increased over time, especially in the last decade. Our approach of using proxies for unearthing information about hidden features of otherwise immeasurable complex performance appears to be viable, and such proxies may be used to validate sub-variables that measure complex behaviour. (shrink)

The paper problematises the reliability and ethics of using social media data, such as sourced from Twitter or Instagram, to carry out health-related research. As in many other domains, the opportunity to mine social media for information has been hailed as transformative for research on well-being and disease. Considerations around the fairness, responsibilities and accountabilities relating to using such data have often been set aside, on the understanding that as long as data were anonymised, no real ethical or scientific issue (...) would arise. We first counter this perception by emphasising that the use of social media data in health research can yield problematic and unethical results. We then provide a conceptualisation of methodological data fairness that can complement data management principles such as FAIR by enhancing the actionability of social media data for future research. We highlight the forms that methodological data fairness can take at different stages of the research process and identify practical steps through which researchers can ensure that their practices and outcomes are scientifically sound as well as fair to society at large. We conclude that making research data fair as well as FAIR is inextricably linked to concerns around the adequacy of data practices. The failure to act on those concerns raises serious ethical, methodological and epistemic issues with the knowledge and evidence that are being produced. (shrink)

This study provides evidence supporting the operation of a novel cognitive process of a somatic seat of attention, or ego-center, whose somatic location is under voluntary control and that provides access to differential emotional resources. Attention has typically been studied in terms of what it is directed toward, but it can also be associated with a localized representation in the body image that is experienced as the source or seat of attention—an aspect that has previously only been studied by subjective (...) techniques. Published studies of this phenomenon under terms such as egocenter or self-location suggest that the seat of attention can be situated in various ways within the experienced body, resulting in what are here referred to as different attentional stances. These studies also provide evidence that changes in attentional stance are associated with differences in cognitive skill, emotional temperament, self-construal, and social and moral attitudes, as well as with access to certain states of consciousness. In the present study, EEG results from multiple trials of each of 11 specific attentional stances confirmed that patterns of neural activity associated with the voluntarily control of attentional stances can be reliably measured, providing evidence for a differential neural substrate underlying the subjective location of the seat of attention. Additionally, brain activation patterns for the attentional stances showed strong correlations with EEG signatures associated with specific positive emotional states and with arousal, confirming that differential locations of the seat of attention can be objectively associated with different emotion states, as implied in previous literature. The ability to directly manage the seat of attention into various attentional stances holds substantial potential for facilitating access to specific cognitive and emotional resources in a new way. (shrink)

With his customary incisiveness, W. V. Quine presents logic as the product of two factors, truth and grammar--but argues against the doctrine that the logical truths are true because of grammar or language. Rather, in presenting a general theory of grammar and discussing the boundaries and possible extensions of logic, Quine argues that logic is not a mere matter of words.

Even lawyers who obey the law often seem to act unethically--interfering with the discovery of truth, subverting justice, and inflicting harm on innocent people. Standard arguments within legal ethics attempt to show why it is permissible to do something as a lawyer that it would be wrong to do as an ordinary person. But in the view of most critics these arguments fail to turn wrongs into rights. Even many lawyers think legal ethics is flawed because it does not accurately (...) describe the considerable moral value of their work. In Lawyers and Fidelity to Law, Bradley Wendel introduces a new conception of legal ethics that addresses the concerns of lawyers and their critics alike.Wendel proposes an ethics grounded on the political value of law as a collective achievement that settles intractable conflicts, allowing people who disagree profoundly to live together in a peaceful, stable society. Lawyers must be loyal and competent client representatives, Wendel argues, but these obligations must always be exercised within the law that constitutes their own roles and confers rights and duties upon their clients. Lawyers act unethically when they treat the law as an inconvenient obstacle to be worked around and when they twist and distort it to help their clients do what they are not legally entitled to do. Lawyers and Fidelity to Law challenges lawyers and their critics to reconsider the nature and value of ethical representation. (shrink)

W E Andersen; Education and the Ethical Concept of a Person or Willie, and the Redoubtable Mr. Chips, Journal of Philosophy of Education, Volume 2, Issue 1, 30.

A non-epistemological history of historical epistemology Content Type Journal Article DOI 10.1007/s11016-010-9501-5 Authors W. R. Albury, School of Humanities, University of New England, Armidale, NSW 2351, Australia Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796.

Within this 1963 text, Professor Watson writes as a physicist seeking to understand how it is that physics goes on at an ever increasing pace to reveal new ...

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This work is in the public domain in (...) the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant. (shrink)

The article is concerned with the question of how legal institutions are structured with the use of constitutive, institutive, consequential, and terminative rules. To that end, the regulation of international treaties as laid down in the Vienna Convention on the Law of Treaties of 1969 is analysed. This leads to the discovery of two additional categories of rules: content rules and invalidating rules. Finally, the special status of unique legal institutions is investigated. Unique legal institutions – for example, heads of (...) state, parliaments, and supreme courts – enjoy validity in a legal system to the exclusion of the validity of any other legal institution of the same category in that system. (shrink)

The notion of 'the first person' is centrally invoked in philosophical discussions of selfhood, subjectivity, and personhood. We ask whether this notion, as invoked in these discussions, is con-tingently or essentially a grammatical term. While it is logically possible that the linguistic dimensions of self-reference are accidental to this phenomenon, we argue that no explications of such phenomena as 'reference de se' or 'essential indexicality' in non-grammatical terms has been or likely can be provided, since grammatical factors uniquely co-vary with (...) the forms of self-reference in question. The role of grammar is reinforced by the fact that species-specific forms of reference are never purely lexical and always have a structural signature involving specific grammatical configurations; and by findings that in cognitive disorders independently characterized as disorders of selfhood, such as autism spectrum conditions, the pronominal system proves to be a particular locus of vulnerability. We conclude that grammar and human-specific forms of selfhood form an inextricable unity, inviting renewed attention to language as a constitutive condition of personhood in at least some of its forms. (shrink)