Figure 5
From: Detection of time-, frequency- and direction-resolved communication within brain networks
Time resolved connectivity (rPDC) on central zone crossing in the Y-Maze: Correct vs incorrect alternations. Strength of contralateral homotypic (a) and ipsilateral heterotypic (b) coherence (rPDC) resolved in both time (seconds - X-axis) and frequency (Hz - Y-axis) based on 15 EEG samples capturing correct and 15 incorrect Y-Maze alternations. Colour bars translate rPDC arbitrary units [a.u.] to corresponding colour. Subplot titles indicate channel pair and direction of coherence; left parietal (hippocampus) = L.H, right parietal (hippocampus) = R.H, left prefrontal cortex = L.PFC and right prefrontal cortex = R.PFC. Time window corresponds to transition through central zone of Y-Maze [see Suppl. Fig. 1c]. Correct and incorrect alternation types are stratified by row. (c): Isolation of a specific temporal pattern of directed coherence unique to correct alternations. (c)1: 6 Hz signal from R.PFC to R.H at time = 1.6 s (c)2: 6 and 9 Hz signals from L.H to the R.H at 1.9 s. (c)3: 6 Hz signal from R.H to R.PFC from 2–3 s. (d) rPDC strength (mean ± SEM) at 6, 9 and 16 Hz plotted over time for correct (black) and incorrect (red) alternations. (e) Heat plots (as in c), modified to only show time-frequency points where rPDC strength differs by more than one sigma between alternation types.
