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电子生理学半球不对称性是由表层刺激引起的,引起视觉感知

D Bonfanti¹, E Bertacco¹, L C Parra²

¹Perception and Awareness Lab, Department of Neuroscience, Biomedicine and Movement Sciences, University of Verona, Verona, Italy.

Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology

|April 24, 2025

概括

直接刺激腹腔内 (IPS) 产生视觉感知 () 具有独特的脑活动模式,特定于每个半球. 这表明背部通路在早期视觉区域之外有助于有意识的视觉感知.

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
电子生理学电子生理学

背景情况:

腹腔内 (IPS) 在视觉处理和空间认知中发挥作用.
了解由直接大脑刺激产生的视觉感知的神经基础至关重要.

研究的目的:

要确定来自直接IPS刺激的电生理活动,引起视觉感知,是半球特异性的.
为了研究表层的神经相关物.

主要方法:

十九名参与者接受了通过左侧和右侧IPS的跨磁刺激 (TMS) 在基值强度下.
在TMS期间记录了脑电图 (EEG),参与者报告了色感知.
相关组件分析 (CCA) 用于分析大脑活动.

主要成果:

从左侧的IPS TMS中对素的感知显示出早期 (30毫秒) 和晚期 (120-250毫秒) 的激活,涉及中央,额头和尾电极.
从右 IPS TMS 的素感知显示出早期 (60毫秒) 和晚期 (150-250毫秒) 激活,涉及头部和前部电极.
主要视觉区域没有被TMS通过IPS激活.

结论:

直接的IPS刺激会产生针对受刺激半球的持续电生理活动.
周围素与早期视觉处理区域之外的唤起活动有关,这与刺激半球特定.
观察到表层基体电生理学动态的半球差异,表明背部通路在有意识的视觉感知中的作用.

关键词:

半球不对称性半球不对称性内硫 (IPS) 是一种内硫.色素是一种色素.这就是TMS-EEG.两个流的假设.视觉意识视觉意识视觉意识

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