Williams Carrie A, Deweerth Stephen P
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA, USA.
Neurocomputing (Amst). 2007 Jun 1;70(10-12):1954-1959. doi: 10.1016/j.neucom.2006.10.078.
Resonance tuning in a model of rhythmic movement is compared when the central pattern generator (CPG) consists of two endogenously bursting or two tonically spiking neurons that are connected with reciprocally inhibitory synapses. The CPG receives inhibitory and/or excitatory position feedback from a linear, one-degree-of-freedom mechanical subsystem. As with previously published results [5, 15], resonance tuning is limited to frequencies that are greater than the intrinsic CPG frequency with endogenously bursting neurons. In contrast, with tonically spiking neurons, the resonance tuning range is expanded to frequencies that are below the intrinsic CPG frequency.
当中央模式发生器(CPG)由两个内源性爆发性神经元或两个紧张性发放神经元组成,且它们通过相互抑制性突触相连时,对节律性运动模型中的共振调谐进行了比较。CPG从一个线性的、单自由度机械子系统接收抑制性和/或兴奋性位置反馈。与之前发表的结果[5, 15]一样,对于内源性爆发性神经元,共振调谐仅限于高于CPG固有频率的频率。相比之下,对于紧张性发放神经元,共振调谐范围扩展到低于CPG固有频率的频率。