Spike generation depends on both envelope and fine structure signals

Evidence

So, the spiketrain generation is based on the following formula which depends on both envelope and fine structure temporal information: (1) Where U(t) is an uniform intern noise between 0 and 1, TSF signal > 0 (t) is the positive part of the fine structure at the output of an auditory filter, E(t) is the envelop at the output of an auditory filter, P refract (t) is the refractory period. This function is either equal to 0 or 1 related to a refractory period equal to 1/2500. So, if spiketrain(t 0 ) = 1, P refract (t) = 0 for t 0 < t < t 0 + 1/2500 and P refract (t 0 + 1/2500) = 1 , Thres is the discharge threshold sets here to 0.5, Which is exactly equivalent to: (2) where Signal signal > 0 (t) is the positive part of the input signal at the output of an auditory filter. As an intern noise U has been added, each signal is passed 300 times in the simulation model to estimate the distribution of the periodicities of the spiketrain. Moreover, for each signal, a single auditory filter output, located in the passband of the input signal and centred on the carrier frequency (fc ), has been used. — Dijk, Pim van, Physiology, Psychoacoustics and…, 4623