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Centre Interdisciplinaire
de Recherche et d’Innovation
en Cybersécurité et Société
de Recherche et d’Innovation
en Cybersécurité et Société
1.
Borroni, P.; Gorini, A.; Riva, G.; Bouchard, S.; Cerri, G.
Mirroring avatars: Dissociation of action and intention in human motor resonance Article de journal
Dans: European Journal of Neuroscience, vol. 34, no 4, p. 662–669, 2011, ISSN: 0953816X.
Résumé | Liens | BibTeX | Étiquettes: abductor digiti minimi muscle, adult, article, controlled study, evoked muscle response, Evoked Potentials, extensor carpi radialis muscle, female, hand movement, hand muscle, human, human experiment, Humans, male, Mirror Neurons, Motor, Motor Cortex, motor resonance, motor system, Movement, normal human, observation, opponens pollicis muscle, primary motor cortex, priority journal, transcranial magnetic stimulation, Young Adult
@article{borroni_mirroring_2011,
title = {Mirroring avatars: Dissociation of action and intention in human motor resonance},
author = {P. Borroni and A. Gorini and G. Riva and S. Bouchard and G. Cerri},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-80051665149&doi=10.1111%2fj.1460-9568.2011.07779.x&partnerID=40&md5=494f999536343221a7d035e8548b5f00},
doi = {10.1111/j.1460-9568.2011.07779.x},
issn = {0953816X},
year = {2011},
date = {2011-01-01},
journal = {European Journal of Neuroscience},
volume = {34},
number = {4},
pages = {662–669},
abstract = {Observation of others' actions induces a subliminal activation of motor pathways (motor resonance) that is mediated by the mirror neuron system and reflects the motor program encoding the observed action. Whether motor resonance represents the movements composing an action or also its motor intention remains of debate, as natural actions implicitly contain their motor intentions. Here, action and intention are dissociated using a natural and an impossible action with the same grasping intention: subjects observe an avatar grasping a ball using either a natural hand action ('palmar' finger flexion) or an impossible hand action ('dorsal' finger flexion). Motor-evoked potentials (MEPs), elicited by single transcranial magnetic stimulation of the hand area in the primary motor cortex, were used to measure the excitability modulation of motor pathways during observation of the two different hand actions. MEPs were recorded from the opponens pollicis (OP), abductor digiti minimi (ADM) and extensor carpi radialis (ECR) muscles. A significant MEP facilitation was found in the OP, during observation of the grasping phase of the natural action; MEPs in the ADM were facilitated during observation of the hand opening phase of the natural action and of both opening and grasping phases of the impossible action. MEPs in the ECR were not affected. As different resonant responses are elicited by the observation of the two different actions, despite their identical intention, we conclude that the mirror neuron system cannot utilize the observer's subliminal motor program in the primary motor cortex to encode action intentions. © 2011 Federation of European Neuroscience Societies and Blackwell Publishing Ltd.},
keywords = {abductor digiti minimi muscle, adult, article, controlled study, evoked muscle response, Evoked Potentials, extensor carpi radialis muscle, female, hand movement, hand muscle, human, human experiment, Humans, male, Mirror Neurons, Motor, Motor Cortex, motor resonance, motor system, Movement, normal human, observation, opponens pollicis muscle, primary motor cortex, priority journal, transcranial magnetic stimulation, Young Adult},
pubstate = {published},
tppubtype = {article}
}
Observation of others' actions induces a subliminal activation of motor pathways (motor resonance) that is mediated by the mirror neuron system and reflects the motor program encoding the observed action. Whether motor resonance represents the movements composing an action or also its motor intention remains of debate, as natural actions implicitly contain their motor intentions. Here, action and intention are dissociated using a natural and an impossible action with the same grasping intention: subjects observe an avatar grasping a ball using either a natural hand action ('palmar' finger flexion) or an impossible hand action ('dorsal' finger flexion). Motor-evoked potentials (MEPs), elicited by single transcranial magnetic stimulation of the hand area in the primary motor cortex, were used to measure the excitability modulation of motor pathways during observation of the two different hand actions. MEPs were recorded from the opponens pollicis (OP), abductor digiti minimi (ADM) and extensor carpi radialis (ECR) muscles. A significant MEP facilitation was found in the OP, during observation of the grasping phase of the natural action; MEPs in the ADM were facilitated during observation of the hand opening phase of the natural action and of both opening and grasping phases of the impossible action. MEPs in the ECR were not affected. As different resonant responses are elicited by the observation of the two different actions, despite their identical intention, we conclude that the mirror neuron system cannot utilize the observer's subliminal motor program in the primary motor cortex to encode action intentions. © 2011 Federation of European Neuroscience Societies and Blackwell Publishing Ltd.
2.
Renaud, P.; Décarie, J.; Gourd, S. -P.; Paquin, L. -C.; Bouchard, S.
Eye-Tracking in Immersive Environments: A General Methodology to Analyze Affordance-Based Interactions from Oculomotor Dynamics Article de journal
Dans: Cyberpsychology and Behavior, vol. 6, no 5, p. 519–526, 2003, ISSN: 10949313 (ISSN).
Résumé | Liens | BibTeX | Étiquettes: Adaptation, article, Computer Simulation, Data Display, device, eye movement control, Eye movements, eye tracking, Fixation, Head, head movement, head position, human, human experiment, Humans, male, methodology, Models, motor performance, Movement, normal human, Ocular, perception, Physiological, Psychological, Reference Values, User-Computer Interface, virtual reality, visual information, Visual Perception, visual stimulation
@article{renaud_eye-tracking_2003,
title = {Eye-Tracking in Immersive Environments: A General Methodology to Analyze Affordance-Based Interactions from Oculomotor Dynamics},
author = {P. Renaud and J. Décarie and S. -P. Gourd and L. -C. Paquin and S. Bouchard},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-0142126405&doi=10.1089%2f109493103769710541&partnerID=40&md5=ee95606b1ed832fcc154d27b22f8bd3a},
doi = {10.1089/109493103769710541},
issn = {10949313 (ISSN)},
year = {2003},
date = {2003-01-01},
journal = {Cyberpsychology and Behavior},
volume = {6},
number = {5},
pages = {519–526},
abstract = {This paper aims at presenting a new methodology to study how perceptual and motor processes organized themselves in order to achieve invariant visual information picking-up in virtual immersions. From a head-mounted display, head and eye movements were recorded using tracking devices (magnetic and infrared) that render the six degrees-of-freedom associated with the position and orientation of head movements, and two degrees-of-freedom from one eye. We measured the continuous line of sight's deviation from a pre-selected area on a virtual stimulus. Some preliminary analyses of the dynamical properties of the emergent perceptual and motor patterns are presented as they are considered to be representative of the process of affordance extraction.},
keywords = {Adaptation, article, Computer Simulation, Data Display, device, eye movement control, Eye movements, eye tracking, Fixation, Head, head movement, head position, human, human experiment, Humans, male, methodology, Models, motor performance, Movement, normal human, Ocular, perception, Physiological, Psychological, Reference Values, User-Computer Interface, virtual reality, visual information, Visual Perception, visual stimulation},
pubstate = {published},
tppubtype = {article}
}
This paper aims at presenting a new methodology to study how perceptual and motor processes organized themselves in order to achieve invariant visual information picking-up in virtual immersions. From a head-mounted display, head and eye movements were recorded using tracking devices (magnetic and infrared) that render the six degrees-of-freedom associated with the position and orientation of head movements, and two degrees-of-freedom from one eye. We measured the continuous line of sight's deviation from a pre-selected area on a virtual stimulus. Some preliminary analyses of the dynamical properties of the emergent perceptual and motor patterns are presented as they are considered to be representative of the process of affordance extraction.