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Sensorimotor adaptation of saccadic eye movements
D Pélisson1, N Alahyane, M Panouillères
1Espace et Action, U864, Inserm and University Lyon 1, Lyon, France. denis.pelisson@inserm.fr
Neuroscience and Biobehavioral Reviews
|December 23, 2009
Summary
Sensory-motor adaptation is crucial for movement. The saccadic system, using eye movements (saccades), reveals complex adaptation mechanisms influenced by various factors, aiding understanding and rehabilitation.
Area of Science:
- Neuroscience
- Ophthalmology
- Motor Control
Background:
- Sensory-motor adaptation is vital for goal-directed movements.
- The saccadic system, involving rapid eye movements (saccades), serves as a model for studying adaptation.
- Recent advances have elucidated properties and neural bases of saccadic adaptation using the double-step paradigm.
Purpose of the Study:
- To review behavioral and neurophysiological data on saccadic adaptation.
- To present a unified view of saccadic adaptation mechanisms.
- To emphasize contextual factors, adaptive changes in oculomotor commands, and their link to visual perception.
Main Methods:
- Review of behavioral data from healthy and brain-damaged subjects.
- Analysis of neurophysiological data from non-human primates.
- Examination of contextual factors influencing saccadic adaptation.
Main Results:
- Saccadic adaptation involves multiple mechanisms.
- Mechanisms vary based on experimental context, time scales, saccade types, and adaptation direction (shortening vs. lengthening).
- Adaptive oculomotor command changes are linked to visual perception.
Conclusions:
- Understanding the complexity of saccadic adaptation is key.
- This complexity is crucial for comprehending saccadic adaptation's physiopathology.
- Insights can guide the development of rehabilitation strategies for motor disorders.
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