Fig. 2.

Experiment 1: Harmonic advantage when discriminating instrument notes across a delay. (A) Schematic of trial structure for experiment 1. During each trial, participants heard two notes played by the same instrument and judged whether the second note was higher or lower than the first note. Notes were separated by a delay of 0, 5, or 10 s. (B) Power spectra of example harmonic and inharmonic (with frequencies jittered) notes from a cello (the fundamental frequency of the harmonic note is 200 Hz in this example). (C) Results of experiment 1 plotted separately for the two difficulty levels that were used. Error bars show SEM.