FIGURE 2 | Examples of oscillations in the background activity of sSC neurons. (A) The raw autocorrelogram consisted of 1,720 spikes of one of the sSC neurons, recorded over 262s of spontaneous activity. (B) The autocorrelogram for the other sSC neuron consisted of 8,320 spikes, recorded over 104s. (C,D) The respective power spectra computed from autocorrelograms shown in A and B. Note the different oscillatory frequencies for the two cells, 23 and 70Hz. (E) Distribution of the frequencies of oscillations found in the background activity of the SC. (F) The median oscillation strength for background oscillations. (G) The median frequency of background oscillations. Bottom and upper boxes lines indicate 25th and 75th percentile. The error bars indicate minim and maxim values in the