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dian zhen dui ren ti tong he fei tong zuo ji suo yin qi de nao you fa dian de ying xiang
Pages: 135-139
Year: Issue:  2
Journal: Acupuncture Research

Keyword:  大脑皮层诱发电位痛刺激电针人体痛成分针刺穴位统计学处理中长不锈钢针短潜伏期;
Abstract: The feature of evoked cerebral potential (ECP) by pain and non-pain stimulation was studied.The effect of electroacupuncture on each element of ECP was analysed, and their clinical significancediscussed. A series of experiments were carried out on 15 normal subjectswith non-pain stimulationand pain stimulation plus electroacupuncture. The following results have been obtained. (1) Non-pain ECP is a multiphasic complex wave which generally consists of P_1, N_1, P_2, P_3, 4-5elements. As the confident limit is 95%, its lower limit ts 69.2% and upper limit is 100%. (2) Pain ECP is also a multiphasic complex which generally consists of P1, N1, P2, N2, P3,N3, P4, 6-7 elements. As the confident limit is 95%, its lower limit is 55.5% and upper limit is 100%. (3) Comparing pain ECP with non-pain ECP, the latency of P_1-P_3 5 elements of pain ECP decre-ases (P0.05), its amplitude increases (P0.05) and its wave form is still more complex. FollowingP_3 two new elements (N_3, P_3) appear. These two elements may be nonspecific indications of pain. (4) There is no significant change in the latency and amplitude of ECP by non-pain stimulatingthe little finger while electroneedling Hegu. No significant change in intensity and nature of nonpainsensation can be perceived by the stibjects. (5) Significant inhibitory effect of electro-acupuncture on the later elements ECP has been obser-ved (P0.05 ), but there is no inhibitory effect on earlier elements-P_1, N_1 (P0.1).
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