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. Author manuscript; available in PMC: 2014 Feb 1.
Published in final edited form as: Nat Neurosci. 2013 Jul 14;16(8):1125–1131. doi: 10.1038/nn.3463

Figure 1. Attention-dependent reduction in the burstiness.

Figure 1

a: Interspike interval (ISI) histogram for an example neuron, with the two attention conditions superimposed (red: attend into receptive field (RF), blue: attend away). Note the higher fraction of short ISIs among the unattended trials (blue). c: Attention-dependent reduction of the normalized autocorrelation function at short time lags (log scale) for the same neuron. Note the reduction in the peak of the autocorrelation function in the attended condition (red) relative to the unattended condition (blue), indicative of a reduction in burst firing. b, d: Same as panels a and c, for a different example neuron. e: Distribution of changes in burst fraction (ISI < 4 msec), normalized by sum, among 69 broad spiking neurons, indicating significant attention-dependent reduction in the fraction of action potentials within bursts with attention. (Two units (not shown) did not have ISIs < 4 msec in either attention condition.) f: Distribution of changes in burst index (B.I.), normalized by sum, also indicating significant attention-dependent reduction in burst fraction with attention (N=71).