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. 2018 Oct 26;9:4460. doi: 10.1038/s41467-018-07020-4

Fig. 2.

Fig. 2

Length of ITI contributes to learning rate. a The size of the CR in a trial (n) as a function of ITI duration in the previous trial (n − 1), averaged across all sessions and binned into six percentiles (one-way ANOVA, significant effect for percentile, df = 5, f = 29.85, p < 0.0001). Inset shows the averaged trial order sorted similarly by ITI duration percentile (n = 171, one-way ANOVA, df = 5, f = 0.74, p = 0.59). b Furthermore, CR size was positively correlated with the previous ITI duration (Spearman correlation, r = 0.14, p < 0.0001) on a trial-by-trial basis. c Change in CR amplitude between successive trials (CR in trial (n) minus CR in trial (n − 1) increase with ITI duration (one-way ANOVA, df = 5, f = 81.14, p < 0.0001). ITI duration (x-axis) computed similarly to a. For control, inset shows the standard expected learning effect i.e. the same change in CR (n) − CR (n − 1) as a function of trials in learning. Data presented as mean ± S.E.M (ndays = 82)