elephant.statistics.fanofactor¶
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elephant.statistics.
fanofactor
(spiketrains)[source]¶ Evaluates the empirical Fano factor F of the spike counts of a list of neo.SpikeTrain objects.
Given the vector v containing the observed spike counts (one per spike train) in the time window [t0, t1], F is defined as:
The Fano factor is typically computed for spike trains representing the activity of the same neuron over different trials. The higher F, the larger the cross-trial non-stationarity. In theory for a time-stationary Poisson process, F=1.
Parameters: - spiketrainslist
List of neo.SpikeTrain or pq.Quantity or np.ndarray or list of spike times for which to compute the Fano factor of spike counts.
Returns: - fanofloat
The Fano factor of the spike counts of the input spike trains. Returns np.NaN if an empty list is specified, or if all spike trains are empty.