摘要
目的: 应用脑诱发电位地形图技术, 观察模拟感传时大脑皮层第一体觉区 (SI)功能活动的变化, 探讨循经感传的形成机理。方法: 观察对象为 26名健康的成年无感传志愿者, 以脑电信号采集处理系统自颅外记录SI的体觉诱发反应地形图。以柔软的画笔沿胆经的路线轻轻刷动, 模拟循经感传。结果: 对 11名无感传健康志愿者进行模拟胆经感传的观察, 在SI的下肢和面部代表区出现了诱发反应, 与循经感传过程中SI的诱发反应的分布一致; 对 15名受试者进行了模拟胆经感传并绕行上肢的观察, 发现除了在SI的下肢和面部代表区以外, 上肢代表区也出现了诱发反应, 形成了一条与模拟感传路线经过的体区一致的高电位反应带。结论: 沿经脉路线施与的外加刺激可以改变刺激穴位时SI诱发反应的分布,为“外周动因激发”是产生循经感传的决定因素的设想, 提供了一定的实验根据。
Objective: The topographical mapping technique of brain evoked potential was used to observe the changes of the functional activities in the cortical somatosensory area I (SⅠ) during imitating the sensation conduction along the Meridian (SCM). The formation mechanism of sensation conduction was discussed here. Method: 26 healthy adult volunteers were chosen as observe object. Cerebral electric signal processing system was used to record topographical mapping of evoked potential in SⅠ outside the skull. Soft paintbrush was used to slightly brush the Gall Bladder Meridian (GBM) to imitate the sensation conduction. Result: Evoking responses appeared in both foot and face representation areas in SⅠ of 11 healthy volunteers without conduction sensation during imitation of sensation conduction along the GBM (SCGBM), which coincided with the distribution of responses evoked in SI during sensation conduction along Meridian . 15 healthy volunteers were offered imitation of SCGBM as well as brushing through the upper arm additionally, while, the results showed that the evoking responses appeared in the foot, the upper arm and the face representation area of SⅠ. So, it formed a high potential response belt that was similar to the course occurred during the imitation of SCM. Conclusion: The external stimulation along the meridian course can change the distribution of evoking responses in SⅠduring stimulating point. The results provide experimental evidence for the supposition that “activation in sequence in periphery” is the decisive factor for the formation of SCM.
出处
《中华中医药杂志》
CAS
CSCD
北大核心
2005年第1期32-34,7,i001,共5页
China Journal of Traditional Chinese Medicine and Pharmacy
基金
国家攀登计划 (编号JL93006 )
福建省科技厅资助项目
福建省卫生厅资助项目
福建省经络研究重点实验室资助项目
