趙福杉2006-07-262018-06-292006-07-262018-06-292003-07-31http://ntur.lib.ntu.edu.tw//handle/246246/22372本計畫以定量之機械性刺激與電刺激施 加於大鼠尾部，並在其大腦皮質的體感覺 區進行場電位及其電流源密度之分析。 令人吃驚的結果是在大腦皮質上機械性 刺激的反應中心與電刺激的反應中心十分 吻合，這個現象與先前在視丘所得到的結 果不同，在視丘部位兩者之反應中心並不 一致，致於其原因則尚待更進一步地探 討。此外大腦皮質具有清楚的體感覺對 應，電流源密度分析所得之反應約略可以 一偶極來表示，這意味皮質的SI 區之功能 是用來定位刺激之位置。Quantitative mechanical and electrical stimuli were applied on the tail of the rat and the evoked responses in the somatosensory area of the cerebral cortex were recorded. Current source density of the FPs is used to find responsive regions. The results show that the response centers obtained from mechanical stimuli match well to those from electrical stimuli. This finding, although surprising, is quite different from the recordings in the thalamus. The reason is still under investigation. The somatotopic organization in the SI area is clearly shown from the data recorded. From current-source-density analysis a dipole could be used to represent the response of a stimulus in the SI area. Hence, it is suggests that the function of SI in the cerebral cortex is to locate the stimulus.application/pdf464136 bytesapplication/pdfzh-TW國立臺灣大學醫學工程學研究所場電位電流源密度機械性刺 激電刺激field potentialcurrent source densitymechanical stimuluselectrical stimulusreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/22372/1/912213E002119.pdf