Figure 6.

Effects of sniff rate on call dynamics. (A) Call rate is defined as the number of calls (red lines) in a time window of 3 s. Ongoing sniff rate is defined as the mean instant rate (1/sniff duration) of all sniffs with no USV (black sniffs) in the same window. (B) Call rate vs. ongoing sniff rate. Effect of sniff rate p < 0.0001, repeated measures ANOVA, N = 5 rats. (C) Percentage of sniffs accompanied by calls vs. ongoing sniff rate. Effect of sniff rate p < 0.0001, repeated measures ANOVA, N = 5 rats. (D) Instant call rate is defined as 1 over the time between the onsets of calls in two consecutive sniffs (“t” in figure). Instant sniff rate is that of the immediately preceding silent sniff. (E) Call duration vs. instant sniff rate. Red: linear regression; R² = 0.12, p < 0.001. (F) Instant call rate vs. instant sniff rate. R² = 0.67, p < 0.0001. Inset: distribution of instant call rates.