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双侧同时经颅超声多普勒(简称sbTCD)是同时用两个2MHz的探头固定在头部适当位置检测颅内动脉流速的新技术。大脑半球的各种认知过程,特别是语言功能已由多种方法加以评估,如心理测验、脑慢电位、电刺激及局部脑血流(rCBF),但极少有人将双侧半球之间的血流加以比较。本研究在刺激优势半球时用sbTCD观察半球相应动脉血流速度的改变。研究对象是57名健康者,男29,女28,平均29(22～40)岁。第1次试验右利手(RH)30人,左利手(LH)7人,第2次试
Bilateral simultaneous transcranial ultrasound Doppler (sbTCD) is the same time with two 2MHz probe fixed in the appropriate position of the head detection of intracranial artery flow velocity of new technology. Various cognitive processes in the hemisphere, especially language functions, have been evaluated by a variety of methods, such as psychological tests, slow brain potentials, electrical stimulation, and regional cerebral blood flow (rCBF), but very few have evaluated bilateral hemispheres The blood flow is compared. In this study, we used sbTCD to observe the changes of hemodynamics velocity in hemisphere when stimulating dominant hemisphere. The subjects were 57 healthy men, 29 women, 28, an average of 29 (22 to 40) years old. The first trial right hand (RH) 30, left hand (LH) 7, the second test