Fig 7. Mounting behavior is correlated with several aspects of ultrasonic vocalizations emitted by pairs of male mice with different social histories.

(a) Mounting versus total ultrasonic vocalizations (USVs). (b) Mounting versus USV duration. (c) Mounting versus proportional use of 70-kHz plain USVs. (d) Mounting versus proportional use of 50-kHz jump USVs. Black circles: IND-IND pairs; white circles: IND-SOC pairs; gray circles: SOC-SOC pairs. IND = individually housed male; SOC = socially housed male. See methods for additional details regarding housing history.