Stuphorn Veit, Schall Jeffrey D
Center for Integrative & Cognitive Neuroscience, Vanderbilt Vision Research Center, Department of Psychology, Vanderbilt University, Wilson Hall, 111 21st Avenue South, Nashville, Tennessee 37203, USA.
Nat Neurosci. 2006 Jul;9(7):925-31. doi: 10.1038/nn1714. Epub 2006 May 28.
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.
在执行扫视取消任务的猕猴中，辅助眼区记录冲突、错误和奖励的发生情况。通过皮层内微刺激，我们确定辅助眼区是仅起监测作用还是实际上能够影响行为表现。对辅助眼区多个位点进行微弱的微刺激，通过延迟扫视启动，提高了猴子在“停止信号”任务中的表现。这种效应取决于任务背景，因为相同的刺激并不会延迟简单的视觉引导扫视。这些结果表明，辅助眼区能够对扫视产生施加情境性的执行控制。
