Performance during 4-kHz, 8-kHz and 16-kHz probe trials (two-sided paired t-test, n = 6 sessions from 2 mice, 4 kHz: t (5) = 8.3014, P = 4.14 x 10 -4; 8 kHz: t (5) = 3.0758, P = 0.0276; 16 kHz: t (5) = 0.2694, P = 0.7984). * P < 0.05, ** P < 0.01 and *** P < 0.001. All boxplots show median interquartile; the whiskers show the range excluding outliers in all figures unless otherwise mentioned.
