Low MUA tracks MSN spiking while high MUA tracks MSN and FSI spiking.

<p>A) Top: Traces of the firing rates (FR) of MSNs and FSIs. Bottom: power changes in low (0.3-2KHz) and high (8-10KHz) frequencies within the MUA range. B) Correlation between low MUA power and MSN firing rates for all firing rates in one cycle of modulation (gray dotted bars in A). Correlation for low MSN firing rates are expanded in the right panel. Correlation value from one cycle is denoted by the black arrow pointing to the blue circle in C. C) Correlation between power in different frequency bands and population MSN and FSI firing rates during spiking with no modulation, modulation of MSNs, FSIs, or both MSNs and FSIs as illustrated in A. Gray bars denote frequency bands used in the classifier in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0153154#pone.0153154.g007" target="_blank">Fig 7</a>.