【摘要】 非周期激励响应对于神经系统的研究具有重要理论意义和应用价值.为了模拟生物感觉系统中检测信号的机制,基于随机共振检测原理,采用互信息率评价方法,对Hodgkin-Huxley单神经元非周期激励响应进行了研究.实验结果表明,Hodgkin-Huxley单神经元不但阈值下存在非周期随机共振现象,在某些特定的条件下,阈值上也同样存在看非周期随机共振现象.由于噪声广泛存在于信号之中,由此,为研究强噪声背景下的神经系统信号检测提供了一种新的方法.更多还原

【Abstract】 As to neural system studies,the response to aperiodic stimulation has shown its important role,both on theory or in practice.By utilizing means of mutual information rate and theory of stochastic resonance detection,in order to simulate ability of organism in signal detection,aperiodic stochastic resonance in single Hodgkin-Huxley neure is studied.Results indicate that,in a single neuron,aperiodic stochastic resonance phenomenon exists not only in subthreshold signal,but in some special situations,aperiodic stochastic resonance for suprathreshold signal is also observed.Thus,this study gives a new method about neural signal detection that under strong noise background,given that real-world signals are typically accompanied with noises.更多还原