Idiopathic cortical myoclonus restricted to the lower limbs: Correlation between MEPs and 99mTc-ECD single photon emission computed tomography activation study

Kimihiro Tanaka, Ri E. Suga, Takeshi Yamada, Shozo Tobimatsu, Masayuki Sasaki, Yasuo Kuwabara, Hirokazu Furuya, Takuro Kobayashi, Jun Ichi Kira

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

We report a 63-year-old woman with cortical reflex myoclonus restricted to the bilateral lower limbs. Somatosensory evoked cortical potentials to posterior tibial nerve stimulation were enlarged with C-responses. Jerk- locked back averaging of the EEG identified a cortical spike related to myoclonic jerks. Motor evoked potentials recorded from the abductor hallucis muscle showed an exaggerated late response. These findings suggest hyperexcitability of the sensorimotor cortex. 99mTc-ECD single photon emission computed tomography (SPECT) after stimulation of the posterior tibial nerve showed increased perfusion in the contralateral peri-Rolandic area which corresponded to the hyperexcitable region. ASPECT activation study as well as MEPs therefore can be employed to determine the hyperexcitable region in cortical myoclonus.

本文言語英語
ページ(範囲)58-60
ページ数3
ジャーナルJournal of the Neurological Sciences
163
1
DOI
出版ステータス出版済み - 2 1 1999

All Science Journal Classification (ASJC) codes

  • 神経学
  • 臨床神経学

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