The evoked network spike (NS). All the panels are examples from a single experiment. A: An example of a single, stimulus-evoked NS. Each line is a raster plot of a single electrode. B: Population firing rate profiles of NS (population-count-histogram (PCH)). Each thin line is the histogram of a single evoked NS, binned with a 5 ms bin size; the thick black line is the average of 120 responses. All NS are evoked by the same stimulating electrode. C, D: A raster of the first three spikes of two example neurons. Here also it can be seen that while the immediate first spike is very precise, later spikes suffer from a large jitter. C: The raster is elicited from a neuron participating in the immediate response. D: The raster is created from a neuron first firing in the recruitment phase. Figure by permission from reference ³⁸.