| Popis: |
A correlation model was proposed [R. D. Sorkin, J. Acoust. Soc. Am. 87, 1695–1701 (1990)] for describing how listeners discriminate between arrhythmic, tonal sequences. Subjects heard two, successively played (approximately 0.6 s) sequences of eight tones, and reported whether the sequences had the same or different patterns of tone inter‐onset times. In general, subjects behaved as though they decoded and stored a list of inter‐onset times from each sequence and then computed the correlation between the two lists. In the present experiment, the first sequence was presented to the subject's left ear (all tones at 1000 Hz) and the second to the right ear (tones at 2300 Hz). In different conditions: (a) The sequences were expanded in time by a uniform factor k, where 0.6 < k < 1.4; and (b) the starting times of the two sequences were offset from 1 ms to 2.5 s. Discrimination performance was worst when the sequences over‐lapped by 50%. When the sequences were nearly simultaneous (offset by 10 ms or less}, pe... |
