Fig. 7

Ultrasonic vocal repertoire in adult mice. a, b Frequency distribution of ultrasonic vocalizations (%) as a function of call duration (ms) during exposure to anesthetized females (a) and to mdx male intruders (b). c–f Quantification of distinct call patterns showing context-specific genotype differences in the proportion of simple (c), peak (d), composite (e), and sinusoidal calls (f). Call structure was particularly altered during confrontation with anesthetized females and mdx male intruders (both parameters; p < 0.05). U urine test, B bedding test, AF anesthetized female test, MF male–female interaction, MMwt interaction with a WT male, MMmdx interaction with an mdx male. *p < 0.05