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. 2022 Jun 24;15:638269. doi: 10.3389/fnsys.2021.638269

FIGURE 2.

FIGURE 2

Content specific fronto-parietal synchronization during working memory in the macaque monkey. (A) Time-frequency coherence spectra for an LFP pair for three sample objects presented at one screen location. (B) Coherence selectivity index as a function of time and frequency [CSI(t,f)] for the same pair showing significant selectivity (significance threshold at p < 0.02 indicated by white contours) during the delay period. (C) Median value of [CSI(t,f)] for LFP pairs showing selectivity for the sample identity (upper) and location (lower) during the delay. (D) Mean rank-ordered coherence (+/– SEM) in the 12–22 Hz band for the same identity selective pairs as in the upper plot of (C). (E) Mean standard deviation of the relative phase (+/– SEM) in the 12–22 Hz band for the same identity selective pairs as in the upper plot of (C). In plots (D,E), the two SEMs were calculated with the number of pairs or sessions as the degree of freedom.