Functional Magnetic Resonance Image Finding of Cortical Activation by Neuromuscular Electrical Stimulation on Wrist Extensor Muscles
作者:
Bong Han,
Sung Jang,
Yongmin Chang,
Woo Byun,
Seung Lim,
Duk Kang,
期刊:
American Journal of Physical Medicine and Rehabilitation
(OVID Available online 2003)
卷期:
Volume 82,
issue 1
页码: 17-20
ISSN:0894-9115
年代: 2003
出版商: OVID
关键词: Functional Magnetic Resonance Imaging;Cortical Activation;Electric Stimulation
数据来源: OVID
摘要:
Han BS, Jang SH, Chang Y, Byun WM, Lim SK, Kang DS: Functional magnetic resonance image finding of cortical activation by neuromuscular electrical stimulation on wrist extensor muscles.Am J Phys Med Rehabil2003;82:17–20.ObjectiveTo investigate the effects that neuromuscular electrical stimulation on the wrist extensor muscles have on the cerebral cortex.DesignA functional magnetic resonance imaging study was performed on eight normal volunteers. The activation task was the maximum wrist extension by neuromuscular electrical stimulation, applied through a two-channel electrical stimulator. Monophasic square-wave pulses were used. The activation maps were generated by the thresholdttest maps. The level of primary motor cortex and primary sensory cortex activations was estimated.ResultsAmong the eight subjects, seven showed significant activation on contralateral primary sensorimotor cortex by neuromuscular electrical stimulation on the wrist extensor muscles. In these seven subjects, additional bilateral or contralateral supplementary motor area activations were also observed. The number of activated pixels on the primary sensory cortex was slightly greater than that on the primary motor cortex.ConclusionNeuromuscular electrical stimulation, when applied to the peripheral muscles, seems to have a direct effect on the cerebral cortex.
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