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Genre/Form: | Thèses et écrits académiques |
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Material Type: | Document, Thesis/dissertation, Internet resource |
Document Type: | Internet Resource, Computer File |
All Authors / Contributors: |
Gerome Aleandro Manson; Jean Blouin; Luc Tremblay; Franck Vidal, (chercheur en neurosciences).; Aix-Marseille Université.; University of Toronto.; Ecole Doctorale Sciences de la Vie et de la Santé (Marseille). |
OCLC Number: | 1128270158 |
Notes: | Thèse soutenue en co-tutelle. Titre provenant de l'écran-titre. |
Description: | 1 online resource |
Responsibility: | Gerome Aleandro Manson ; sous la direction de Jean Blouin et de Luc Tremblay. |
Abstract:
Research on multisensory integration for goal-directed movements has focused on targets external to the body. In this dissertation, three experiments were conducted to examine sensorimotor transformation processes for movements to body positions (i.e., somatosensory targets). The goal of the first experiment was to investigate if the modality of the cue used to indicate the location of a somatosensory target affects the body representation used to encode the target's position during movement planning. The results showed that auditory cues prompted the use of an exteroceptive body representation for the encoding of movements to somatosensory targets in visual coordinates. The goal of the second experiment was expand on this finding and examine the neural processes associated with the visual remapping auditory-cued somatosensory targets. It was found that the sensorimotor transformation processes responsible for the conversion of somatosensory target positions to visual coordinates engages visuomotor cortical networks to a greater extent than movements to external visual targets. The goal of the third experiment was to examine the sensorimotor transformation processes employed for the online control of movements to somatosensory targets. These results provide evidence that the remapping of somatosensory targets into visual coordinates may not occur prior to online corrections. Altogether the findings of this thesis reveal that sensory cues can facilitate the remapping of somatosensory targets prior to goal directed actions. However, these remapping processes may be too costly to engage in during online control when there is no vision of the reaching limb.
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