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预先预期通过调节感官皮层中的人口调和子空间活动来增强感官运动行为

JeongJun Park^1,2, Seolmin Kim^1,3, HyungGoo R Kim^1,3

¹Center for Neuroscience Imaging Research, Institute for Basic Science (IBS), Suwon 16419, Republic of Korea.

Science advances

|July 7, 2023

概括

预先的知识通过提高视觉皮层的神经调来改善感觉运动行为. 这种神经计算将预期与感官数据集成在一起,增强目标导向的运动,如光滑的追求眼睛运动.

科学领域:

神经科学是一个神经科学.
计算神经科学是一种神经科学.
系统神经科学系统神经科学

背景情况:

预先的知识显著增强了感知和目标导向的行为,特别是在有限或杂的感官输入的情况下.
精确的神经机制,先前的期望提高感觉运动功能仍然在很大程度上未被探索.

研究的目的:

为了研究神经基础,先前的期望如何增强感官运动行为.
为了检查神经活动中部 (MT) 区域在平滑的追踪眼动任务引导的方向期望.

主要方法:

记录了在子视觉皮层的MT区域的神经活动,这些子执行了平滑的追逐眼动任务.
操纵了对视觉目标运动方向的预期.
分析了神经群体的反应,并使用现实的MT模型模拟了它们对行为的影响.
采用状态空间分析来识别与先前预期相关的神经信号.

主要成果:

之前的预期选择性地减少了MT神经反应,基于在感官证据较弱时偏好的方向.
这种响应调制导致了神经群体方向调的提高.
模拟表明,敏的调整可以解释观察到的偏差和平滑的追踪眼动的变化.
状态空间分析揭示了MT活动中的神经信号,与由于先前预期的行为变化相关.

结论:

仅仅在感官区域 (MT) 内的神经计算可以整合先前的知识和感官证据.
在MT区域中,神经群体的敏调整是前期期望的行为益处的关键机制.
先前的期望在MT群体活动中神经编码,影响感觉运动控制.

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