Executive control of countermanding saccades by the supplementary eye field.

Stuphorn V, Schall JD
Nat Neurosci. 2006 9 (7): 925-31

PMID: 16732274 · DOI:10.1038/nn1714

The supplementary eye field registers the occurrence of conflict, errors and reward in macaque monkeys performing a saccade-countermanding task. Using intracortical microstimulation, we determined whether the supplementary eye field only monitors or can actually influence performance. Weak microstimulation of many sites in the supplementary eye field improved monkeys' performance on a 'stop signal' task by delaying saccade initiation. This effect depended on the context of the task because simple visually guided saccades were not delayed by the same stimulation. These results demonstrate that the supplementary eye field can exert contextual executive control over saccade generation.

MeSH Terms (16)

Action Potentials Animals Behavior, Animal Brain Mapping Electric Stimulation Eye Frontal Lobe Functional Laterality Macaca radiata Male Neural Inhibition Neurons Reaction Time Saccades Sensory Thresholds Visual Fields

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