Click sequences were repeating or non-repeating temporal patterns. Each temporal pattern is 249 ms long and the total length of the sequence is 3 s. For sequences 1, 3, 6, 7, 8, and 9, a single fixed temporal pattern repeats 11 times; the other sequences are composed of 11 different non-repeating patterns. We also built some sequences in reverse order (Seq. 1 vs Seq. 3, Seq. 2 vs Seq. 4, Seq. 7 vs Seq. 8). Sequences 1–8 were used for neural recording and sequences 1, 2, and 9 were used for the operant-training experiment. An audio file for each click sequence is provided (Supplementary file 1).