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wo guo shi yan chang yong zuo shu cavia porcellus nei xi ti de ding wei
Author(s): 
Pages: 584-588
Year: Issue:  6
Journal: Acta Physiologica Sinica

Keyword:  guinea pigmedial geniculate bodystereotaxic localization;
Abstract: The stereo-coordinate values of the medial geniculate body(MG)of guinea pigsweighing 300—800g were determined.The anteroposterior coordinate value Aand the left-right coordinate value LR of MG(in mm)show some dependence onbody weight of the animal(W in g)and are found to be in good approximation tolinear functions:A=0.0047W+3.9,LL or RL=0.0018W+3.7 and H=-3.1.For guinea pigs weighing 400—600g,A=6.3,LR or LL=+4.6 and H=-3.1can serve as the mode coordinates.A dominating negative evoked potential in response to click can usually berecorded when the electrode tip is inside the MG proper.This can be taken as usefulreference for accurate MG localization in electrophysiological study.
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