The evaluation of motor imagery in persons with prolonged Disorders of Consciousness (pDOC) is a practical approach to differentiate between patients with Minimally Conscious State (MCS) and Unresponsive Wakefulness Syndrome (UWS) and to identify residual awareness even in individuals with UWS. Investigating the influence of motor observation on motor imagery could be helpful in this regard. Objective:In order to corroborate the clinical diagnosis and identify misdiagnosed individuals, we used EEG recordings, to assess the influence of the low-level perceptual and motoric (...) mechanisms on motor observation on motor imagery, taking into account the role of the high-level cognitive mechanisms in patients with pDOC. Methods:We assessed the influence of motor observation of walking in first-person or third-person view (by a video provision) on motor imagery of walking in the first-person view on the visual N190 (expression of motor observation processing), the readiness potential (RP) (expressing motor preparation), and the P3 component (high-level cognitive processes) in a sample of 10 persons with MCS, 10 with UWS, and 10 healthy controls (CG). Specifically, the video showed a first-view or third-view walk down the street while the participants were asked to imagine a first-view walking down the street. Results:CG showed greater N190 response (low-level sensorimotor processing) in the non-matching than in the matching condition. Conversely, the P3 and RP responses (high-level sensorimotor processing) were greater in the matching than in the non-matching condition. Remarkably, 6 out of 10 patients with MCS showed the preservation of both high- and low-level sensorimotor processing. One UWS patient showed responses similar to those six patients, suggesting a preservation of cognitively-mediated sensorimotor processing despite a detrimental motor preparation process. The remaining patients with MCS did not show diversified EEG responses, suggesting limited cognitive functioning. Conclusions:Our study suggests that identifying the low-level visual and high-level motor preparation processes in response to a simple influence of motor observation of motor imagery tasks potentially supports the clinical differential diagnosis of with MCS and UWS. This might help identify UWS patients which were misdiagnosed and who deserve more sophisticated diagnoses. (shrink)

This paper offers a critical discussion of Searle's account of collective intentionality. It argues Bratman's alternative account avoids some of the shortcomings of Searle's account, over-intellectualizes collective intentionality and imposes an excessive cognitive burden on participating agents.Tthe capacities needed to sustain collective intentionality are examined in an attempt to show that we can preserve the gist of Bratman's account in a cognitively more parsimonious way.

Apperly's and Butterfill's theory about belief reasoning is taken as a starting-point for a discussion of how we make sense of other people's actions in real time. More specifically, the focus lies on how we can understand others' actions in terms of their epistemic states on an implicit level of processing. First, the relevant parts of Apperly's and Butterfill's theory are summarized. Then, their account of implicit theory of mind in terms of registration ascription and perceptual encountering is discussed and (...) rejected. While accepting Apperly's and Butterfill's general epistemic account of belief reasoning, the author suggests that implicit theory of mind involves visuomotor, second-person pragmatic representations. Moreover, this presentation emphasizes the central place of interaction, claiming that perceptual intentions-to-interact are fundamental to social understanding. Via the mechanism of social attention, social intentions automatically prompt agents to share and exchange sensorimotor, pragmatic information. (shrink)

Science, like any other cognitive activity, is grounded in the sensorimotor interaction of our bodies with the environment. Human embodiment thus constrains the class of scientific concepts and theories which are accessible to us. The paper explores the possibility of doing science with artificial cognitive agents, in the framework of an interactivist-constructivist cognitive model of science. Intelligent robots, by virtue of having different sensorimotor capabilities, may overcome the fundamental limitations of human science and provide important technological innovations. Mathematics and nanophysics (...) are prime candidates for being studied by artificial scientists. (shrink)

This book chapter aims at exploring how intentional a piece of behavior should be to count as an action, and how a minimal view on action, not requiring a richly intentional causation, may still qualify such a behavior as voluntary.

Ever since I first saw a dance performance I have wondered why it is that I am sometimes fascinated and touched by some people moving about on a stage, while at other times it leaves me completely indifferent. I will argue that an answer to this question has to be searched for in the way sensory stimuli are processed in the brain. After all, all our actions, perceptions and feelings are mediated and controlled by the brain. The thoughts and feelings (...) evoked by a dance performance are no exception and thus they too have a neural substrate in the brain. (shrink)

Ce texte a déjà paru dans Parcours anthropologiques, 9 | 2014, p. 24-38. Nous remercions Denis Cerclet de nous avoir autorisé à le reproduire ici. Résumé : L'objectif de cet article est de revenir sur l'édifice construit par Marcel Jousse à l'articulation des sciences sociales et biologiques. Il s'agit de montrer toute l'actualité de ce modèle qui associe l'individu, autrui et leur environnement en le resituant dans une filiation théorique qui tient le corps en mouvement et en relation pour fondement (...) à - Anthropologie – Nouvel article. (shrink)