Figure 3. Shorter click-evoked ABR latencies in mothers represent a genuine shift towards faster processing.
A) Peak I and B) peak II latencies, and C) IV–V interpeak latencies as a function of age, measured 20 dB above each animal’s threshold. For these peaks, which differed significantly between pup-naive females and mothers, pup-naive females did not show any age-related latency shift. Trend lines refer to pup-naive points only. r2 for all panels is <0.001. Data points for mothers and cocarers are all below these trend lines.