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. 2012 Nov 16;7(11):e49233. doi: 10.1371/journal.pone.0049233

Figure 2. Ultrasonic vocalizations during courtship test.

Figure 2

(a–c) Spectrograms (frequency, kHz * time, s) of courtship songs produced by each genotype. (A) Mean peak frequency during 3 min was higher for the in Cad6−/− group (>75 kHz) than the wild-type group (<75 kHz). (B) Maximum (max) peak frequency was higher for the Cad6−/− group than either the Cad6+/− or wild-type group. (C) The number of calls during 3 min did not differ significantly in the 3 groups. (D) The latency to start calling did not differ significantly in the 3 groups. Error bars represent the SEM.