在基于感知时间和基于节拍时间的感知时间过程中,自上而下的处理的神经基质
Mitsuki Niida1, Yusuke Haruki2, Fumihito Imai2
1Department of Psychology, Graduate School of Humanities and Human Sciences, Hokkaido University, Kita 10, Nishi 7, Kita-Ku, Sapporo, 060-0810, Japan. niida6m@eis.hokudai.ac.jp.
Experimental brain research
|July 19, 2023
概括
这项研究发现,无论是基于持续时间还是基于节拍的时间,都会激活常见的大脑区域,包括基底和小脑,而不考虑自上而下的处理. 这表明刺激的规律性,而不是任务重点,驱动这些时间机制.
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
背景情况:
- 之前的研究将基于节拍的时间 (常规刺激) 与基底腺激活联系起来.
- 基于持续时间的计时 (单间隔) 之前与小脑激活有关.
- 上向下处理在区分这些时间机制中的作用仍然不清楚.
研究的目的:
- 调查自上而下处理对基于持续时间和基于节拍时间的大脑激活模式的影响.
- 为了确定不同或重叠的神经网络是否支持这两种时间模式.
- 为了澄清时间感知的神经基础.
主要方法:
- 功能磁共振成像 (fMRI) 用于监测大脑活动.
- 参与者对听觉序列进行了持续判断和节奏判断.
- 听觉刺激包括单间隔和同时节拍.
主要成果:
- 全脑分析显示,在持续时间和节奏判断方面,基底和小脑中存在重叠激活.
- 在两个判断任务之间没有发现激活区域的显著差异.
- 对兴趣区域的分析表明,对于任何任务,基底或小脑内的激活水平没有显著差异.
结论:
- 常见的大脑区域,包括基底和小脑,都参与了对持续时间和节奏判断的上下处理.
- 这些发现表明,刺激的规律性,而不是自上而下的任务需求,主要推动了基于持续时间和基于节拍的时间机制的参与.
- 该研究表明,在特定的实验条件下,不同形式的时间感知具有统一的神经基础.
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