Fig. 7.

Effects of stress on delay- and reward-related dmPFC–dmSTR oscillatory synchrony. Top row: shown are mean spectral coherence plots during the delay A) and reward B) intervals for all animals under baseline testing conditions. There was a prominent peak in spectral synchrony (coherence) spanning theta and alpha frequencies and reaching a maximum at ~7 Hz during both the delay a) and reward b) intervals. Shading indicates theta (θ), alpha (α), beta (ß), and gamma (γ) frequencies. Bottom row: mean percent change (±SEM) from baseline under no-stress control and stress testing conditions. Stress significantly suppressed delay-related dmPFC–dmSTR theta and alpha synchrony while modestly increasing delay-related beta synchrony. Stress had no significant effects on reward-related synchrony. ^**P < 0.01, ^***P < 0.001 vs. no-stress control. ⁺P < 0.05, ⁺⁺P < 0.01, ⁺⁺⁺P < 0.001 vs. baseline.