Figure 6

Synchronized activities of mPFC cell pairs during the delay period. (A) Spiking synchronization of a cell pair during the early delay. The left and middle panels were JPETH of the cell pair in left and right trials, respectively (75 ms bin), aligned with delay on. This cell pair showed shorter but stronger correlation in right trial than in left trial (p < 0.05; two-tailed t-test). Shown in the right panel were the correlation coefficients along main diagonal of the JPETH. Red line: left trial; blue line: right trial. (B) Spiking synchronization of a cell pair during the middle delay. The left and middle panels were JPETH of the cell pair in left and right trials, respectively (75 ms bin), aligned with delay off. This cell pair displayed shorter but stronger correlation in right trial than in left trial (p < 0.05; two-tailed t-test). Shown in the right panel were the correlation coefficients along main diagonal of the JPETH. Red line: left trial; blue line: right trial. (C) Plotting of correlation coefficients during left-trial delay against those during right-trial delay for individual cell pairs (n = 94 cell pairs). Some cell pairs showed synchronization preference for left trial, and others for right trials.