Schematic diagram of a possible trial sequence for condition UNREL3. In context trials, harmonic 3 plus harmonics 7, 9, and 12 are replaced by non-informative noise bands. The difference in F0 between the low and the high cases can be most easily seen by comparing the positions of the high harmonics to the fixed position of the noise bands. Trial 1: context trial with higher F0 in first interval. Trial 2: context trial with higher F0 in second interval. Trial 3: test trial with identical F0s and fourth harmonic shifted upward in frequency. Trial 4: context trial with higher F0 in first interval. Trial 5: test trial with identical F0s and third harmonic shifted downward in frequency.