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. 2018 Aug 29;12:601. doi: 10.3389/fnins.2018.00601

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Copyright © 2018 Christison-Lagay and Cohen.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Behavioral performance on the category task. Average psychometric performance for both monkeys is plotted as the probability that the monkeys reported a “large” frequency difference as a function of the frequency difference between the tone-A and tone-B sequences (in semitones). The center of each bar indicates average performance. The length of the bars indicates the 95%-confidence interval. The gray dashed line represents chance performance of reporting a “large” frequency difference (p = 0.5).