PL EN


2009 | 5 | 27-41
Article title

FLEXIBILITY OF TEMPORAL EXPECTATIONS FOR TRIPLE SUBDIVISION OF A BEAT

Content
Title variants
Languages of publication
EN
Abstracts
EN
When tapping in synchrony with an isochronous sequence of beats, participants respond automatically to an unexpectedly early or late beat by shifting their next tap; this is termed the 'phase correction response' (PCR). A PCR has also been observed in response to unexpected perturbations of metrical subdivisions of a beat, which suggests that participants have temporal expectancies for subdivisions to occur at particular time points. It has been demonstrated that a latent temporal expectancy at 1/2 of the inter-beat interval (IBI) exists even in the absence of explicit duple subdivision in previous IBIs of a sequence. The present study asked whether latent expectancies at 1/3 and 2/3 of the IBI can be induced by a global experimental context of triple subdivision, and whether a local context of consistently phase-shifted triple subdivisions can induce different expectancies. Using the PCR as the dependent variable, we find weak evidence for latent expectancies but strong evidence for context-induced shifts in expectancies. These results suggest that temporal referents between beats, which typically are linked to simple ratios of time spans, are flexible and context-dependent. In addition, we show that the PCR, a response to expectancy violation, is independent of and sometimes contrary to the simultaneous phase adaptation required by a change in subdivision timing.
Contributors
author
  • Bruno H. Repp, Haskins Laboratories, New Haven, Connecticut (for postal address contact the journal editor)
References
Document Type
Publication order reference
Identifiers
CEJSH db identifier
09PLAAAA06987
YADDA identifier
bwmeta1.element.857bd87d-3e22-3c77-ac77-7beecb60543b
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