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抑制性标记在视觉搜索过程中加快并加强了在上方结体中的结体目标选择

Christopher Conroy¹, Rakesh Nanjappa^1,2, Robert M McPeek¹

¹Department of Biological and Vision Sciences, State University of New York College of Optometry, New York City, New York, United States.

Journal of neurophysiology

|January 31, 2024

概括

在具有挑战性的视觉搜索任务中,抑制性标记加速并加强了上结核 (SC) 中的萨卡德目标选择. 这种调制增强了大脑中高效的顺序目标选择.

科学领域:

神经科学是一个神经科学.
认知科学认知科学
视觉感知视觉感知视觉感知

背景情况:

在时间压力的困难视觉搜索任务需要高效的顺序顺目标选择.
抑制性标记是一种神经机制,减少对先前搜索的项目的反应,假设它有助于这一过程.
上层结体 (SC) 在结目标选择中起着至关重要的作用,最近的证据表明通过抑制标记进行调制.

研究的目的:

描述和量化抑制标记对上层结合体 (SC) 中目标选择的影响.

主要方法:

rhesus 子执行了一个视觉搜索任务,使用时间压力和多次冲刺.
在任务期间记录了SC中的神经活动.
分析了先前固定 (抑制标记) 对SC神经元活动和标选择的影响.

主要成果:

一个SC神经元子集可靠地在固定期的早期区分了下一个saccade目标.
当以前固定的刺激存在于搜索阵列中时,这种目标歧视更快,更强大.
这些发现表明,抑制标记在多次搜索过程中显著影响SC活动.

结论:

抑制性标记显然加快并加强了SC中的萨卡德目标选择.
这种机制对于在苛刻的视觉搜索场景中有效的行为至关重要.
结果为改进基于SC函数的目标选择计算模型提供了关键数据.

关键词:

抑制性标记是一种抑制性标记.萨卡德斯 (saccades) 是一个古老的书.上级结体 (上级结体)目标选择目标选择目标选择

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