A neural mechanism of hyperaccurate detection of phase advance and delay in electrosensory system of weakly electric fish

Weakly electric fish, Eigenmannia, can detect the time difference of the order of 1 μsec between a jamming signal and its own signal. To clarify the neural mechanism of the hyperaccurate detection of time difference, we proposed a cellular model of a single neuron and a network model for detection of phase advances and delays. The single neuron model can detect the time difference of the order of tens μ sec. A single layer network consisting of the neuron model detects the phase advance and delay up to 60 μ sec. The multilayer network model obtains a detection ability up to 20 μ by superimposing the outputs of multilayers induced by the signals with noises of optimal intensity