Fig. 6

Correlations between c-Fos expression in serotonin (5-HT) neurons in the dorsal raphe nucleus and depression-related behaviors, i.e., time spent on the open arms in the elevated plus maze test (a–c) and immobility time in the forced swim test (d–f), for each duration of acute treadmill running. SED sedentary controls, LSR low-speed running, HSR high-speed running. Pearson’s correlations (r) are shown in the figures