Experimental stimuli, design, and results of Experiment 1.

<p>(A) Top: Example of a sequence in a perceptually regular environment with the final stimulus earlier than expected. Bottom: Example of a sequence in a perceptually irregular environment with the final stimulus later than expected. (B) Proportion of ‘regular’ responses as a function of the timing of the final auditory stimulus in the sequence. Each line represents data obtained with 0 ms jitter level for the two groups. When comparing the data obtained from the identical 0 ms jitter level sequences presented in both groups, the number of ‘regular’ responses is significantly lower for the perceptually irregular group at the points denoted by an asterisk (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0159842#pone.0159842.s002" target="_blank">S2 Table</a>). In all graphs, the error bars represent the standard error of the mean.