Example neuron, population signal-to-noise and selectivity.

<p><b>A</b>) Example average waveform from a recorded neuron (solid line). The abscissa represents time from when the threshold was crossed in microseconds (µs), the ordinate signal amplitude in µV, and the thin lines the standard deviation across waveforms. Rectangles represent the time windows used to measure the standard deviations and to compute d′ (see Methods). <b>B</b>) Histogram of d′ distribution across all single-units. <b>C</b>) Examples of units' response (spike density function; <i>σ</i> = 50 ms) across the different time periods of the task and with different stimulus angular positions (color scale). The gray background indicates the analyzed trial period.