A study of a rectifying electrical synapse activated with a random action potential train

A model of the rectifying electrical synapse of crayfish was developed based on the knowledge of the physiological mechanism. In previous work, however, its analysis was carried out only with a single action potential or steady DC current as a synaptic input. In this paper, we will attempt to understand the physiological properties of the electrical synapse with a random action potential train as its input at the pre-synapse. The results of numerical calculation in the time domain and the frequency domain suggest that the synapse has a low pass characteristic which influences the power density spectrum (PDS) of the output at the post-membrane side, It is also found that effects of the change in interpulse interval variance of the random input action potential train on the output PDS of the post-potential train are not as large as those of synaptic components