Mechanisms of rhythm perception

节奏感知机制

• 批准号: RGPIN-2016-05834
• 负责人: Grahn, Jessica
• 金额: $ 3.72万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=631123
• 关键词: Mechanisms; rhythm; perception

Moving to a musical beat is one of myriad human behaviours that rely on regularity (e.g., walking, talking, turn-taking), but the mechanisms underlying our sensitivity to a regular beat are still a mystery. Beat perception occurs spontaneously, without effort, when we listen to rhythmic sequences of time intervals. Existing models of time perception cannot account for many features of beat perception, and behavioural evidence suggests that humans may have a unique beat-based timing system. My research seeks to characterize this system. Thus far, my research indicates a link between beat perception and movement: brain areas that control movement are activated when we hear rhythm, and certain motor areas respond specifically during beat perception, even when no movement is made. I aim to: i) develop tools to assess beat perception independently from beat production, ii) characterize the timecourse of the motor system’s role in beat perception, and iii) combine brain stimulation and imaging methods to understand the causal roles of specific motor areas in rhythm and beat perception.

随着音乐节拍移动是依赖于规律的无数人类行为之一(例如，走路、说话、转弯)，但我们对规律节拍的敏感性背后的机制仍然是一个谜。当我们听有节奏的时间间隔序列时，节拍感觉会自发地发生，不费力气。现有的时间感知模型无法解释节拍感知的许多特征，行为证据表明，人类可能有一种独特的基于节拍的计时系统。我的研究试图描述这个系统的特点。到目前为止，我的研究表明了节拍感知和运动之间的联系：当我们听到节奏时，控制运动的大脑区域被激活，某些运动区在节拍感知时做出特定的反应，即使在没有动作的情况下也是如此。我的目标是：i)开发独立于节拍产生来评估节拍感知的工具，ii)表征运动系统在节拍感知中所起作用的时序，以及iii)结合脑刺激和成像方法来了解特定运动区域在节奏和节拍感知中的因果作用。