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Temporal coherence versus harmonicity in auditory stream formation.


ABSTRACT: This study sought to investigate the influence of temporal incoherence and inharmonicity on concurrent stream segregation, using performance-based measures. Subjects discriminated frequency shifts in a temporally regular sequence of target pure tones, embedded in a constant or randomly varying multi-tone background. Depending on the condition tested, the target tones were either temporally coherent or incoherent with, and either harmonically or inharmonically related to, the background tones. The results provide further evidence that temporal incoherence facilitates stream segregation and they suggest that deviations from harmonicity can cause similar facilitation effects, even when the targets and the maskers are temporally coherent.

SUBMITTER: Micheyl C 

PROVIDER: S-EPMC3579859 | biostudies-other | 2013 Mar

REPOSITORIES: biostudies-other

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