At the same time, we analyzed the effect of the electrode contact spacing on the electric field in the brain tissue by the bipolar stimulation, it will useful to provide a theoretical basis for clinical application of DBS. 同时还分析了双极刺激时电极触点间距对脑部组织刺激强度、刺激范围的关系,从而更深入的了解电刺激参数对脑深部区域的影响,为DBS的临床应用提供了理论依据。