节奏贝塔频TMS在人体右侧头皮皮层上加强视觉尺寸幻觉
Xue Han1,2, Chao Wang1,2, Lihong Chen3,4
1Research Center of Brain and Cognitive Neuroscience, Liaoning Normal University, Dalian, 116029, China.
Psychonomic bulletin & review
|February 7, 2025
概括
周周贝塔振荡因果影响视觉尺寸感知,增强埃宾豪斯和庞佐幻觉. 在贝塔频率下进行右侧体刺激,但不是theta,改变了幻觉大小,突出了贝塔振荡在视觉处理中的作用.
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:
- 理论上,节奏性大脑活动是为了组织视觉处理.
- 视觉大小的感知是依赖于上下文的,容易产生像Ebbinghaus和Ponzo这样的错觉.
研究的目的:
- 为了研究表层贝塔振荡在视觉尺寸感知中的因果作用.
- 为了确定右侧或左侧顶膜刺激是否会影响埃宾豪斯和庞佐的幻觉.
主要方法:
- 节奏性跨脑磁性刺激 (TMS) 用β (20 Hz) 或 θ (5 Hz) 频率应用于上顶叶.
- 参与者在TMS后立即对虚幻刺激进行了尺寸匹配任务.
- 在顶点上应用的控制刺激.
主要成果:
- 在贝塔频率下,右头顶TMS显著增加了Ebbinghaus和Ponzo幻想的幅度.
- 在贝塔频率下对左侧体刺激没有影响幻觉大小.
- 没有观察到右侧头顶TMS在theta频率的效果.
结论:
- 在右侧头皮皮质中的β振荡因果关系有助于视觉尺寸错觉处理.
- 这些发现强调了β振荡对视觉感知中的认知表现的功能重要性.
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