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The antisaccade: a review of basic research and clinical studies
1MRC Group in Sensory-Motor Neuroscience, Department of Physiology, Queen's University, Kingston, Ontario, Canada. stefan@ss2.biomed.queensu.ca
Neuropsychologia
|September 18, 1998
Summary
The antisaccade task tests voluntary motor control by suppressing reflexive eye movements. This review covers the neural basis of antisaccades and their diagnostic potential in neurological and psychiatric disorders.
Area of Science:
- Neuroscience
- Oculomotor control
- Cognitive psychology
Background:
- Voluntary motor control, including suppressing reflexive responses, is essential for daily activities.
- The antisaccade task, requiring a voluntary eye movement opposite to a visual stimulus, assesses this ability.
- Errors in antisaccade performance are observed in various neurological and psychiatric conditions.
Purpose of the Study:
- To review the neural structures and processes underlying antisaccade task performance.
- To evaluate the diagnostic utility of the antisaccade task.
Main Methods:
- Review of existing literature on antisaccade task performance.
- Analysis of data from brain lesion studies, neurological diseases, and psychiatric disorders.
- Examination of findings from brain imaging studies.
Main Results:
- Brain lesions, neurological diseases, and psychiatric disorders are associated with antisaccade errors (prosaccades).
- Antisaccade generation involves a widespread network of cortical and subcortical brain regions.
- The antisaccade task reveals deficits in executive control and inhibitory processes.
Conclusions:
- The antisaccade task is a valuable tool for probing executive functions and inhibitory control.
- Deficits in antisaccade performance can serve as a biomarker for neurological and psychiatric conditions.
- Further research can refine the diagnostic applications of the antisaccade task in clinical settings.