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A critical feature of brain theories is whether neurons convey a noisy rate code or a precise temporal code. One of most valuable ways to test these theories consists in collecting the electrophysiological activity of cell assembles under several experimental conditions. The sequences of cell discharges-the spike trains-form time series whose dynamics is strongly related to the information processing...
The existence of precise temporal relations in sequences of spike intervals, referred to as ''spatiotemporal patterns'', is suggested by brain theories that emphasize the role of temporal coding. A pattern grouping algorithm was designed to identify and to evaluate the statistical significance of such patterns, particularly for data generated according to stationary Poisson processes. The experimental...
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