传感运动转换的神经切换用于抗分秒的反分秒
Nature
|January 5, 2001
概括
后面的额叶皮层皮层.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 眼运动研究 眼运动研究
背景情况:
- 认知上下文影响导向行为.
- 记忆前冲击/反冲击任务评估了感觉运动转换.
- 对于抗撒卡德选择的神经系统机制尚不清楚.
研究的目的:
- 调查后壁皮质皮质,特别是LIP区域在抗虫的感觉运动转换中的作用.
- 确定大脑如何选择和计算正确的传感运动转换在抗动任务.
主要方法:
- 使用了一种混合的记忆-prosaccade,记忆-antisaccade任务.
- 在后壁皮层皮层的LIP区域记录了神经元活动.
- 在任务执行过程中分析了人口活动和个体神经元放电.
主要成果:
- 区域LIP的群体活动在记忆反曲试验中从视觉方向转向运动方向.
- 一个LIP视觉神经元的子集表现出"悖论性的"放电.
- 这种矛盾的放电发生得很快 (在50毫秒内),并表明视觉细胞水平的早期切换.
结论:
- 区域LIP对于选择和计算反冲击任务中的传感运动转换至关重要.
- 对抗分泌物的神经切换很早就开始,在LIP中的视觉细胞内.
- 这种快速切换机制对于准确的定位行为至关重要.
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