Fig. S3.

Spectrograms for subregions of striatum. (A) From monopolar signals, averaged over all sessions for each monkey. In monkey HH, the CN was divided into an anterior region spanning AP 20–26 and a posterior region spanning AP 14–19 (Fig. S1). In monkey JB, spectrograms were averaged over all channels in the CN, spanning AP 14.6–27.6. For the average over the two monkeys, data from anterior CN and posterior CN recorded in monkey HH were averaged first, and the results were averaged with CN data recorded in monkey JB. (B) From local-average-referenced signals, averaged within a single session from each monkey.