The effect of transcranial magnetic stimulation on reciprocal inhibition in the human leg

Y. Masakado*, Y. Muraoka, Y. Tomita, N. Chino

*この研究の対応する著者

研究成果査読

19 被引用数 (Scopus)

抄録

The effect of magnetic stimulation on reciprocal Ia inhibition of the human leg was investigated. Stimulation of the common peroneal nerve at the fibula head at the threshold of the alpha motoneuron axons resulted in inhibition of the soleus (SOL) H reflex at a conditioning-test interval of 2 ms. Magnetic stimulation over the contralateral motor cortex resulted in complex modulations of the SOL H reflex, including a short latency facilitation followed by inhibition. This inhibition may have been conveyed by Ia inhibitory interneurons projecting to SOL motoneurons. To test for convergence, whether or not the magnetic stimulation was capable of facilitating disynaptic reciprocal Ia inhibition of the SOL H reflex induced by stimulation of the peroneal nerve, the two stimuli were given together or separately. We observed the inhibition significantly increased when the two stimuli were given together than separately. These results suggest tha the Ia inhibitory interneurons projecting to SOL motoneurons in humans might receive convergent input from the motor area of the brain and from Ia afferents of the tibialis anterior (TA) muscle in humans as well as in other animals.

本文言語English
ページ(範囲)429-432
ページ数4
ジャーナルElectromyography and Clinical Neurophysiology
41
7
出版ステータスPublished - 2001 11 20
外部発表はい

ASJC Scopus subject areas

  • 生理学
  • 臨床神経学
  • 生理学(医学)

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