Liu Yuelin, Zhao Chen, Sander-Thömmes Tillman, Yang Taoxi, Bao Yan
School of Psychological and Cognitive Sciences, Peking University, Beijing, China.
Institute of Medical Psychology, Ludwig-Maximilian-University Munich, Munich, Germany.
Psych J. 2024 Jun;13(3):347-354. doi: 10.1002/pchj.696. Epub 2023 Oct 31.
Previous study indicates that there are two distinct behavioral patterns in the sensory-motor synchronization task with short stimulus onset asynchrony (SOA; 2-3 s) or long SOA (beyond 4 s). However, the underlying neural indicators and mechanisms have not been elucidated. The present study applied magnetoencephalography (MEG) technology to examine the functional role of several oscillations (beta, gamma, and mu) in sensorimotor synchronization with different SOAs to identify a reliable neural indicator. During MEG recording, participants underwent a listening task without motor response, a sound-motor synchronization task, and a motor-only continuation task. These tasks were used to explore whether and how the activity of oscillations changes across different behavioral patterns with different tempos. Results showed that during both the listening and the synchronization task, the beta oscillation changes with the tempo. Moreover, the event-related synchronization of beta oscillations was significantly correlated with motor timing during synchronization. In contrast, mu activity only changes with the tempo in the synchronization task, while the gamma activity remains unchanged. In summary, the current study indicates that beta oscillation could be an indicator of behavioral patterns between fast tempo and slow tempo in sensorimotor synchronization. Also, it is likely to be the potential mechanism of maintaining rhythmic continuous movements with short SOA, which is embedded within the 3 s time window.
先前的研究表明，在具有短刺激起始异步（SOA；2 - 3秒）或长SOA（超过4秒）的感觉运动同步任务中存在两种不同的行为模式。然而，其潜在的神经指标和机制尚未阐明。本研究应用脑磁图（MEG）技术来检查几种振荡（β、γ和μ）在不同SOA的感觉运动同步中的功能作用，以确定一个可靠的神经指标。在MEG记录过程中，参与者进行了无运动反应的听力任务、声音 - 运动同步任务和仅运动的延续任务。这些任务用于探索振荡活动是否以及如何随着不同节奏的不同行为模式而变化。结果表明，在听力任务和同步任务期间，β振荡都随节奏变化。此外，β振荡的事件相关同步在同步期间与运动时间显著相关。相比之下，μ活动仅在同步任务中随节奏变化，而γ活动保持不变。总之，当前研究表明，β振荡可能是感觉运动同步中快节奏和慢节奏之间行为模式的一个指标。而且，它很可能是在3秒时间窗口内维持短SOA有节奏连续运动的潜在机制。
