OSCILLATORY BRAIN ACTIVITY DURING A MOTOR TASK
OSCILLATORY BRAIN ACTIVITY DURING A MOTOR TASK
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DOI：
10.1097/00001756-199309150-00001
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发表时间：
1993-09-30
期刊：
影响因子：
1.7
通讯作者：
ELBERT, T
中科院分区：
文献类型：
--
作者：
KRISTEVAFEIGE, R;FEIGE, B;ELBERT, T
通过分析4名健康右利手受试者在运动准备（WAIT）、任务执行（SMI）和对照（REST）条件下的自发、非侵入性记录活动，研究了与需要高水平感觉运动整合（SMI）的手动任务相关的神经磁场谱功率变化。使用37通道仪器记录左侧感觉运动皮质的神经磁场。在所有受试者中，在WAIT状态期间始终观察到以19 Hz附近为中心的显著窄带运动准备节律。在SMI期间，26-30 Hz活动的平均相对增加出现在两名受试者中，与最近在猴子SMI期间观察到的γ波段增强平行。
CHANGES in spectral power in neuromagnetic fields associated with a manual task requiring a high level of sensorimotor integration (SMI) were investigated by analysing spontaneous, non-invasively recorded activity during motor preparation (WAIT), task performance (SMI), and control (REST) conditions in four healthy, right-handed human subjects. Neuromagnetic fields were recorded over the left sensorimotor cortex using a 37-channel instrument. In all subjects, a prominent narrow-band motor preparation rhythm centred near 19 Hz was consistently observed during the WAIT state. During SMI, mean relative increases in 26-30 Hz activity appeared in two of the subjects, paralleling gamma band enhancement recently observed during SMI in monkeys.