期刊
ENEURO
卷 8, 期 2, 页码 -出版社
SOC NEUROSCIENCE
DOI: 10.1523/ENEURO.0085-21.2021
关键词
memory capacity; motor planning; practice effects; sequence production; skillful movement
资金
- James S. McDonnell Foundation Scholar award
- Natural Sciences and Engineering Research Council of Canada [RGPIN-2016-04890]
- Canada First Research Excellence Fund (BrainsCAN)
- Canada Research Chairs Program
The study shows that participants can use visual information to plan multiple future actions during ongoing movements, but the planning horizon is limited, and receiving information about more than three movements ahead does not result in faster sequence production. With practice, participants demonstrated larger performance improvements for larger viewing windows and an expansion of the planning horizon.
When performing a long chain of actions in rapid sequence, future movements need to be planned concurrently with ongoing action. However, how far ahead we plan, and whether this ability improves with practice, is currently unknown. Here, we designed an experiment in which healthy volunteers produced sequences of 14 finger presses quickly and accurately on a keyboard in response to numerical stimuli. On every trial, participants were only shown a fixed number of stimuli ahead of the current keypress. The size of this viewing window varied between 1 (next digit revealed with the pressing of the current key) and 14 (full view of the sequence). Participants practiced the task for 5 days, and their performance was continuously assessed on random sequences. Our results indicate that participants used the available visual information to plan multiple actions into the future, but that the planning horizon was limited: receiving information about more than three movements ahead did not result in faster sequence production. Over the course of practice, we found larger performance improvements for larger viewing windows and an expansion of the planning horizon. These findings suggest that the ability to plan future responses during ongoing movement constitutes an important aspect of skillful movement. Based on the results, we propose a framework to investigate the neuronal processes underlying simultaneous planning and execution.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据