Fig. 6: WT mice successfully solved olfactory CAPTCHA (synchronous case).

A Stimuli were the same as in the asynchronous case but the target appear only 50 ms after the onset of the background odors. B Group performance of four WT mice for known and novel background odors in the synchronous case. Error bars are the 95% confidence interval (n = 277 trials for novel backgrounds and n = 1191 trials for known backgrounds) and symbols are the performance of individual WT mice. p-values were calculated using the binomial test. C Fraction of types of errors and 95% confidence interval for known and novel background odors. p-values were calculated using the Fisher exact test adjusted using the Bonferroni correction. D Mean ± s.e.m. respiration signal for four WT mice. E Performance and 95% confidence interval for the novel background odor as a function of the presentation number. P-value was calculated for the first presentation to determine whether the performance was different from 50% (chance) using a binomial test, n = 44 trials. F Mean ± s.e.m. of the increase in sniff rate for novel background odor compared to the preceding trial with (s)-(−)-limonene as a function of the novel background odor presentation number, n = 39 trials. p-values were calculated using the Bonferroni corrected t-test. Symbols represent average increases of individual WT mice.