Figure 1

(A) Stimulus characteristics and examples of same and different trials for the single tone comparison task. Tones were presented with no ITI. (B) Examples of same and different trials for the short-term memory task for the sequence length of 3 tones. For “same” trials, S1 was repeated as the second melody of the pair (S2) after a 2000 ms silent delay. For “different” trials, one tone in S2 was altered to change the melodic contour. Tones are represented as waveforms and their fundamental frequencies are illustrated with colored lines.