神经振荡和上下连接是由对象场景一致性调节的
Ye Gu1, Alexandra Krugliak2, Alex Clarke1,3
1Department of Psychology, University of Cambridge, Downing Place, Cambridge, CB2 3EB, United Kingdom.
Cerebral cortex (New York, N.Y. : 1991)
|October 21, 2025
概括
场景背景显著影响对象识别. 意想不到的背景会减缓识别,增加视觉路径中的大脑活动,并增强上下脑连接,揭示了背景.
科学领域:
- 认知神经科学 认知神经科学
- 视觉感知 视觉感知 视觉感知
- 神经成像是一种神经成像.
背景情况:
- 环境知识影响我们如何识别物体.
- 同等效应在预期的场景环境中显示出更快,更准确的对象识别.
- 现场对象一致性效应背后的神经机制尚未完全理解.
研究的目的:
- 调查场景对象一致性如何影响大脑振荡活动和连接性.
- 为了确定参与处理一致性效应的大脑区域.
- 为了确定一致性效应是否涉及自上而下的或自下而上的神经调制.
主要方法:
- 磁脑电图 (MEG) 用于测量大脑活动.
- 记录了参与者的行为反应 (反应时间).
- 分析的重点是振荡活动和功能连接模式.
主要成果:
- 对象识别对于与先前场景背景不一致的项目来说更慢.
- 不一致的物体导致腹部视觉通路中低频大脑活动增加.
- 对于不一致的项目,观察到从前额叶和前额叶皮层到后额叶时皮层的上下连接性增加.
结论:
- 之前的场景信息动态调节视觉对象处理.
- 腹部视觉通路中反复出现的神经动态受到环境背景和先前知识的影响.
- 对象识别与环境中可用的上下文信息密切相关.
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