本文提出对神经放电脉冲间隔(Interspike interval,简记ISI)序列进行自回归(Autoregressire,简记AR)分析的方法。利用AR模型及格林函数和功率谱密度函数对猫的大脑体感皮层一区(First Somatosensory area of corfex,简记SI区)的神经细...本文提出对神经放电脉冲间隔(Interspike interval,简记ISI)序列进行自回归(Autoregressire,简记AR)分析的方法。利用AR模型及格林函数和功率谱密度函数对猫的大脑体感皮层一区(First Somatosensory area of corfex,简记SI区)的神经细胞在不同条件下的ISI序列进行处理分析,从而提取ISI序列的AR阶数及参数、记忆指标、相依性和周期性等特征。展开更多
This paper examines the effects of current and conductance noises in a minimal Hodgkin- Huxley type model of a cold receptor neuron. Current noise enters the membrane equation directly while conductance noise is propa...This paper examines the effects of current and conductance noises in a minimal Hodgkin- Huxley type model of a cold receptor neuron. Current noise enters the membrane equation directly while conductance noise is propagated through the activation variables. Compared with common used interspike interval method, ISI-distance is a simple complementary approach to measure the different effects of current and conductance noises. ISI-distance extracts information from the interspike intervals by evaluating the ratio of instantaneous firing rates, which is parameter-free, time scale-independent and easy to visualize. Simulation results show that the most significant differences between different noise implementations in a pacemaker-like tonic firing regime at the transition to chaotic burst discharges.展开更多
文摘本文提出对神经放电脉冲间隔(Interspike interval,简记ISI)序列进行自回归(Autoregressire,简记AR)分析的方法。利用AR模型及格林函数和功率谱密度函数对猫的大脑体感皮层一区(First Somatosensory area of corfex,简记SI区)的神经细胞在不同条件下的ISI序列进行处理分析,从而提取ISI序列的AR阶数及参数、记忆指标、相依性和周期性等特征。
文摘This paper examines the effects of current and conductance noises in a minimal Hodgkin- Huxley type model of a cold receptor neuron. Current noise enters the membrane equation directly while conductance noise is propagated through the activation variables. Compared with common used interspike interval method, ISI-distance is a simple complementary approach to measure the different effects of current and conductance noises. ISI-distance extracts information from the interspike intervals by evaluating the ratio of instantaneous firing rates, which is parameter-free, time scale-independent and easy to visualize. Simulation results show that the most significant differences between different noise implementations in a pacemaker-like tonic firing regime at the transition to chaotic burst discharges.
