摘要
利用数值方法和神经细胞膜电位的Hodgkin_Huxley方程 ,研究了直、交流电和噪声刺激对神经细胞膜电位发放的影响 .通过分析刺激后神经细胞膜电位发放的振幅、频率和峰间距离等特征 ,得到了外界直流电流刺激的强度与刺激后膜电位发放振幅的递减关系 .交流电流刺激的强度和振幅对应出现复杂的振幅窗口和频率窗口 ;
With the help of numerical method and the Hodgkin-Huxley equation of n eural cell membrane potential, the effect of external stimulus such as direct cu rrent, alternating current and noise on the potential spike of neural cell membr ane was investigated. By analyzing the amplitude, frequency and two-near-spike d istance of potential spike after the stimulus, a decreasing relation between the intensity of external direct-current stimulus and the amplitude of stimulated p otential spike was found. Complicated amplitude windows and frequency windows we re observed corresponding to the intensity and amplitude of alternating current stimulus. With the increase of stimulus intensity, the Gauss white noise can des troy the rhythm of potential spike.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2004年第2期80-84,共5页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目 (1990 2 0 0 5)
