相关的变异性及其注意力调制取决于解剖学连接性

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Shraddha Shah^1,2, Jacqueline Hembrook-Short³, Vanessa Mock⁴

¹Neuroscience Graduate Program, University of Rochester, Rochester, NY 14627.

Proceedings of the National Academy of Sciences of the United States of America

|August 22, 2024

概括

注意力减少了视觉皮层中共享的神经变异性,特别是在刺激电路中. 这种效果取决于解剖连接性,突出其在视觉处理中的重要性.

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.
视觉处理视觉处理

背景情况:

视觉皮层神经元之间的共同变异性影响知觉.
注意力在调节这种变化的作用是复杂的,并未完全理解.
解剖连接性对共享变异性的影响在很大程度上仍未经测试.

研究的目的:

为了研究解剖连接如何影响主要视觉皮层 (V1) 中的共享尖峰变异性 (V1).
为了确定注意力是否根据神经元连接类型 (刺激性与抑制性) 不同地调节共享变异性.

主要方法:

在V1中同时记录执行视觉注意任务的子的神经元活动.
使用尖端交叉相关性推断解剖连接的推断.
在有定向和无定向注意的条件下分析尖峰数的相关性.

主要成果:

注意力没有改变未连接的V1神经元对中的尖峰数相关性.
激发性连接的V1神经元显示,与注意力相关的峰值计数减少.
抑制性连接的V1神经元表现出高,注意力不变的尖峰数相关性.
激发电路的相关变异性取决于神经元对比调.

结论:

共享的神经可变性取决于神经回路内的特定类型的解剖连接.
注意力选择性地减少了激发电路中的共享变异性,即使V1的整体影响是微妙的.
解剖学连接是理解神经可变性的注意力调制的一个关键因素.

关键词:

单突触连接是单突触连接.主要视觉皮层的主要视觉皮层.峰值计数的相关性与相关性视觉空间注意力空间注意力

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