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. 2015 Dec 3;10(12):e0144164. doi: 10.1371/journal.pone.0144164

Fig 4. Increased emission of male USVs before an intromission or lordosis.

Fig 4

(A) The average number of ultrasonic vocalizations (USVs) emitted by male rats (paired with devocalized females) during the five seconds before, and (B) the five seconds after a mount, intromission, lordosis, or paracopulatory behavior. Both graphs show the comparison between USVs emitted before or after the behaviors minus the USVs that would have been emitted during 5 seconds in the equally distributed USVs (*p<0.05 compared to zero). Data are shown as median ± semi interquartile range.