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. 2003 Jul 30;23(17):6798–6809. doi: 10.1523/JNEUROSCI.23-17-06798.2003

Figure 3.

Figure 3.

Coherent oscillations in an example neuron pair recorded from two separate electrodes in the supplementary motor area during the task with a constant RSI (250 msec). A, B, Spike density functions of the two neurons, averaged separately for three movements directed to the target triplet used in the primary trials. C, TrCCF calculated for the same neuron pair. This was smoothed with a two-dimensional Gaussian kernel withσx = 40 msec andσy = 4 msec. D, Difference between the smoothed TrCCF (C) and the TrCCF expected for independent spike trains. The latter was calculated on the basis of the spike density functions of the individual neurons (see Materials and Methods). E, F, Amplitude (or power; E) and relative phase (F) of the AWCS computed for the same neuron pair. G, Amplitude of the AWCS computed for the Poisson surrogate spike trains generated according to the spike density functions of the same neuron pair. H, Map of statistical significance (p values) calculated from a set of 10 surrogate AWCSs as shown in G (see Materials and Methods).