Fig. 4.

Percent change in serotonin with respect to individual behavioral activity in female mice exposed to social interaction with a male. Activity was positively related to the increase in serotonin (Spearman's ρ=0.646, P=0.009, N=15). Activity was defined as the sum duration of all behaviors: locomotion, digging, rearing, rejection and ano-genital investigation (Table 1). Here, the percentage change in serotonin signal is relative to baseline, not control traces. Values may appear low due to electrode ‘fouling’.