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在本地V1微回路上的注意力效应解释了选择性的V1-V4通信

Christini Katsanevaki¹, André M Bastos², Hayriye Cagnan³

¹Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Frankfurt 60528, Germany; International Max Planck Research School for Neural Circuits, Frankfurt 60438, Germany.

|September 15, 2023

概括

选择性注意通过调节神经回路来引导刺激. 这项研究表明,注意力改变了V1中的局部抑制,使前突触回路能够进入V4,从而实现视觉信息的选择性路由.

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.
视觉感知视觉感知视觉感知

背景情况:

选择性注意力优先考虑特定的刺激,可能是通过增强它们的神经表现.
上下注意力控制可能针对前突触电路来实现刺激路由.
在V1和V4中的马节奏与视觉处理和注意力调制有关.

研究的目的:

为了研究潜在的选择性注意力和刺激路由的神经机制.
为了建模注意力上下影响如何调节突触前电路.
为了确定前突触引入是否解释了视觉信息的选择性路由.

主要方法:

跨光谱密度的动态因果模型 (DCM-CSD) 用于建模诱导的神经反应.
在V1.1中模拟了两种视觉刺激诱导玛节律.
分析了V1电路内的内在连接的注意力调制.

主要成果:

观察到V1马节律对V4马节律的选择性诱导,用于应对的刺激.
注意调制涉及V1颗粒层的局部抑制降低,V1颗粒层的抑制增加.
预突触的注意力影响和随后的诱导足以解释选择性路由.

结论:

在前突触V1电路上的注意力上下影响介导视觉信息的选择性路由.
在V1内调节局部抑制是选择性注意力的关键机制.
前突触引入为注意力如何将刺激引导到更高的视觉区域提供了可行的解释.

关键词:

注意力注意力注意力注意力动态因果模型 (DCM) 是一种动态因果模型.玛玛是什么意思玛玛是什么意思澳门澳门澳门澳门澳门视觉皮层的视觉皮层.

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相关概念视频

Vision

Vision

Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.