在基本震中,与震相关的皮质活动
B Hellwig1, S Häussler, B Schelter
1Neurologische Universitätsklinik, Freiburg, Germany.
Lancet (London, England)
|March 7, 2001
概括
电脑电图 (EEG) 成功检测出与本质震相关的感觉运动皮质活动,与此前的磁脑电图 (MEG) 研究不同. 这表明传感运动皮质在产生基本震方面发挥着作用.
科学领域:
- 神经科学是一个神经科学.
- 临床神经学 临床神经学
背景情况:
- 传感运动皮层中与震相关的活动已知在帕金森症休息震中,通过磁脑电图 (MEG) 和电脑电图 (EEG) 进行研究.
- 之前的MEG研究未能检测到皮质参与本质震.
- 这项研究研究了EEG在基本震和强化生理震中检测震相关皮质活动的能力.
研究的目的:
- 确定脑电图 (EEG) 是否可以在患有基本震 (ET) 或强化生理震 (EPT) 的患者中识别与震相关的皮质活动.
- 为了将EEG发现与以前的磁脑电图 (MEG) 进行比较,结果是本质震.
主要方法:
- 在7名ET和3名EPT患者的手腕延伸肌和肌肌中同时记录高分辨率的EEG和电肌图 (EMG).
- 患者进行单侧姿势手腕延伸以激活震.
- 纠正震荡EMG和EEG信号之间的一致性估计.
主要成果:
- 在九个ET臂中的五个中,在EMG和EEG之间发现了显著的震频率连贯性.
- 异连贯图局部化最大连贯到相反的感觉运动皮质.
- 在EPT患者中没有检测到一致的显著皮质肌肉连贯性.
结论:
- 同时的EEG-EMG记录显示了在基本震中震频率的显著皮质肌肉连贯性.
- 这一发现与先前的MEG研究形成鲜明对比,表明EEG对于检测ET的皮质参与更为敏感.
- 结果表明,感觉运动皮层参与了基本震的产生,类似于帕金森症休息震.
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