International Journal of Physical Medicine & Rehabilitation
Open Access
ISSN: 2329-9096
ISSN: 2329-9096
Revol P
France
Review Article
Separate Pathways for Automatic and Intentional Visuo-Manual Reach Transformations: New Perspectives for Hemiparesia Rehabilitation Using
Moving Objects
Author(s): Pisella L, Gaveau V, Delporte L, Revol P, Prablanc C, Jacquin-Courtois S, Rode G, Luauté J and Rossetti YPisella L, Gaveau V, Delporte L, Revol P, Prablanc C, Jacquin-Courtois S, Rode G, Luauté J and Rossetti Y
Reaching implies effector and target locations to be computed and updated continuously all along the visuo-motor transformation process, before and during movement execution, aiming in making these instantaneous locations coincide spatially. So instead of a neuro-anatomical dissociation between areas devoted to motor planning versus control, there might be 1) an automatic pathway of visual-to-motor transformation which relies on a comparison at the level of oculo-centric coordinates between visual target and hand locations from multimodal sources of information and 2) intentional pathways relying on the allocentric comparison between visual locations of the hand and of the target. Converging evidence from patients with optic ataxia, neuroimaging and transcranial magnetic stimulation techniques, and investigations in primates, has led to ascribe the automatic pathway to the direct conn.. View More»
DOI:
10.4172/2329-9096.1000303