The large FF when computing spikes over the sample period is therefore at least in part due to trial-to-trial variability in active touch.> -wrap-foot> Spike times outside of touch periods also appeared temporally irregular.
For both regimes were able to compute approximate spike times and predict the exact number of spikes per theta cycle (and instantaneous frequency of firing as a direct consequence) in a range of parameter values that leads to firing within the gamma frequency band.
Furthermore, we were able to set up a model for the spikes of each scenario with which we were able to compute model spike time series.
To get the ROC curve, we make a threshold and compute the spike prediction r ^ c (t ) as follows: (4) r ^ c (t ) = 1 if λ (t ) ≥ c r ^ c (t ) = 0 if λ (t ) < c.
The measure first computes the time resolved (unnormalized) population rate by computing the spike count across all neurons in bins of 1 ms along the trial.
We show here extensions of this method of computing with spike events, introducing an adaptive scheme leading to the emergence of V1-like receptive fields and then a model of bottom-up saliency pursuit.
Stimulus evoked responses were computed as spike counts in 40 ms windows after stimulus onset.
For each neuron, we subsequently computed the spike counts over causal boxcar windows (rectangular windows looking only in the past) of length 250 ms sliding in 10 ms steps.
To further explore the relationship between the unit and LFP activity, we also computed the spike-triggered averages (STAs) for each of the 76 unit responses.
To quantify responses, we recorded the time of each EOD produced by the fish, and then computed the spike-density function (SDF) by convolving each EOD time with a Gaussian of 200-ms width (Carlson and Hopkins, 2004).
