Fig. 6

Delta synchrony increased in OB–vHPC–mPFC network when animals correctly performed working memory task. Mean correlation in time lag between A vHPC–mPFC, B OB–mPFC and C vHPC–OB at delta (< 4 Hz) frequency. Correlation coefficient were enhanced during correct trials for delta oscillation. Data were analyzed by Wilcoxson-test, n = 6 per group. **p < 0.01, ***p < 0.001 compared to control. OB olfactory bulb, mPFC medial prefrontal cortex, vHPC ventral hippocampus