Dery Hadar, Buaron Batel, Mazinter Roni, Lavi Shalev, Mukamel Roy
School of Psychological Sciences, Tel Aviv University, Tel Aviv 6997801, Israel.
Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 6997801, Israel.
iScience. 2023 Aug 25;26(10):107720. doi: 10.1016/j.isci.2023.107720. eCollection 2023 Oct 20.
A salient feature of motor and sensory circuits in the brain is their contralateral hemispheric bias-a feature that might play a role in integration and learning of sensorimotor skills. In the current behavioral study, we examined whether the lateral configuration between sound-producing hand and feedback-receiving ear affects performance and learning of an audio-motor skill. Right-handed participants (n = 117) trained to play a piano sequence using their right or left hand while auditory feedback was presented monaurally, either to the right or left ear. Participants receiving auditory feedback to the contralateral ear during training performed better than participants receiving ipsilateral feedback (with respect to the training hand). Furthermore, in the Left-Hand training groups, the contralateral training advantage persisted in a generalization task. Our results demonstrate that audio-motor learning is sensitive to the lateral configuration between motor and sensory circuits and suggest that integration of neural activity across hemispheres facilitates such learning.
大脑中运动和感觉回路的一个显著特征是它们的对侧半球偏向性——这一特征可能在感觉运动技能的整合和学习中发挥作用。在当前的行为研究中，我们研究了发声手和接收反馈的耳朵之间的侧向配置是否会影响音频运动技能的表现和学习。右利手参与者（n = 117）在单耳（右耳或左耳）呈现听觉反馈的情况下，用右手或左手训练弹奏一段钢琴序列。在训练期间接受对侧耳听觉反馈的参与者比接受同侧反馈（相对于训练手）的参与者表现更好。此外，在左手训练组中，对侧训练优势在泛化任务中持续存在。我们的结果表明，音频运动学习对运动和感觉回路之间的侧向配置敏感，并表明跨半球神经活动的整合促进了这种学习。
