Haskins Publications

Number	1611
Year	2010
Drawer	28
Entry Date	08/23/2010
Authors	Repp, B.H., London, J., Keller, P.E.
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Publication	Psychological Research, DOI 10.1007/s00426-010-0301-8
url	http://www.haskins.yale.edu/Reprints/HL1611.pdf
Abstract	Two experiments investigated the effects of interval duration ratio on perception of local timing perturbations, accuracy of rhythm production, and phase correction in musicians listening to or tapping in synchrony with cyclicaly repeated auditory two-interval rhythms. Ratios ranged from simple (1:2) to complex (7:11, 5:13). Rhythm production and perception exhibited similar ratio-dependent biases: rhythms with small ratios were produced with increased ratios, and timing perturbations in these rhythms tended to be harder to detect when they locally increased the ratio than when they reduced it. The opposite held for rhythms with large ratios. The demonstrates a close relation between rhythm perception and production. Unexpectedly, however, the neutral “attractor” was not the simplest ratio (1:2 = 0.50) but a complex ration near 4:7 (=0.57). Phase correction in response to perturbations was generally rapid and did not show the ration-dependent biases observed in rhythm perception and production. Thus, phase correction operates efficiently and autonomously even in synchronization with rhythms exhibiting complex interval rations.
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