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注意调节早期视觉处理:主观对比感知与早期C1 ERP组件之间的关联

Wang-Nan Pan¹, Yu-Wan Zhao¹, Zi-Xi Luo¹

¹Department of Psychology and Behavioral Sciences, Zhejiang University, Hangzhou, China.

Psychophysiology

|December 26, 2023

概括

空间注意力空间注意力

科学领域:

神经科学是一个神经科学.
认知心理学认知心理学
视觉感知视觉感知视觉感知

背景情况:

空间注意力在调节早期视觉处理,特别是V1 (初级视觉皮层) 中的作用受到辩论.
之前的研究通常假定注意力均地增强神经反应,但最近的发现表明对感知有更复杂,双向的影响.
目前尚不清楚这些感知效应是否反映在最早的视觉唤起潜能 (C1) 中,以及C1调制是否是对对比感知注意力效应的基础.

研究的目的:

调查空间注意力是否调节人类最早的视觉唤起潜能 (C1) V1.1.
确定C1的注意力调节是否与对比感知的主观变化相关,特别是对于高对比度刺激.
探索注意力对早期视觉神经活动和主观感知体验的影响之间的关系.

主要方法:

进行了两项涉及67名参与者的实验.
利用行为任务和脑电图 (EEG) 的组合来记录与事件相关的潜力 (ERP).
分析了ERP的C1组件与注意力操纵和对比感知有关.

主要成果:

所有参与者都没有观察到C1元件的持续的注意力增强或减弱.
在C1的注意调节和高对比度刺激的感知对比度之间发现了显著的相关性.
这表明,对C1的注意力影响与注意力如何改变对比的外观有关.

结论:

最早的视觉皮层反应 (C1) 的注意力调节在不同个体中并不统一.
这些发现提供了证据,将C1的注意调节与对比感知的主观体验联系起来.
早期视觉皮层处理,如C1所反映,可能会调解注意力对主观视觉感知的影响.

关键词:

C1 一个人的心态欧洲经济论坛 (ERP) 是一个欧洲经济论坛.对比的外观外观外观.源头分析源头分析空间上的注意力视觉感知视觉感知视觉感知

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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.

Visual System

Visual System

Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...