Event-related brain potentials isolate the motor component in a tapping task.
Event-related brain potentials isolate the motor component in a tapping task.
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事件相关的大脑电位隔离敲击任务中的运动部分。
DOI：
10.1097/00001756-200110080-00007
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发表时间：
2001
期刊：
影响因子：
1.7
通讯作者：
Gibbon,J
中科院分区：
文献类型：
--
作者：
Dale,CL;Gratton,G;Gibbon,J
重复敲击被用来研究时间感知、记忆和再现。互拍间隔和它们的可变性，产生于任务期间的认知和运动过程。我们使用的准备电位发作的措施，以确定在定时间隔运动组件的潜伏期。受试者在四个目标间隔（1.5-2.75秒）进行了节奏，双手敲击任务。整体延迟生产增加ISI，因为没有跨目标间隔的变异性，符合广义韦伯定律。相比之下，ISI的平均运动潜伏期约为0.5秒。这种恒定的运动延迟也可以指示归因于运动处理的恒定可变性。
Repetitive tapping is used to investigate temporal perception, memory, and reproduction. Intertap intervals and their variability, arise from cognitive and motor processes during the task. We used a measure of readiness potential onset to determine motor component latency during the timed interval. Subjects performed a paced, two-handed tapping task at four target intervals (1.5–2.75 s). Overall latency of production increased with increasing ISI, as did variability across target interval, conforming to a generalized Weber's law. In contrast, average motor latency was roughly 0.5 s across ISI. This constant motor latency may also indicate constant variability attributable to motor processing.