Fig. 6.
Chemically driven synchrony was more precise than electrically driven synchrony. A: normalized JBSI values computed for decreasing jitter windows, from pairs tested by current steps, are plotted against the jitter window for 5 representative pairs from each group (blue lines for E-coupled SOM pairs, red and green lines for C- and D-coupled FS pairs, respectively). The jitter window for which the JBSI drops to half its maximum (crossing the horizontal dotted line) is defined as the temporal resolution (Rt) of that pair and is inversely related to firing precision. B: cumulative histograms of Rt for pairs tested by current steps; only pairs with peak JBSI ≥ 0.15 are included. Precision of C- and D-coupled FS pairs was similar to each other but significantly better (by about ⅓) than precision of E-coupled SOM pairs (note the differences in medians, the points intersecting the horizontal dotted line).