A recency effect in sound localization?

G. Christopher Stecker, Ervin R. Hafter

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

In a free-field pointing task, listeners localized trains of 4-32 spatially distributed Gabor clicks (narrowband impulses) centered at 4-kHz carrier frequency and repeating at an interval of 5 ms. Multiple regression coefficients estimated the perceptual "weight" applied to each click in a train during location judgments. Temporal weighting functions obtained in this way exhibited two key features: onset dominance, as evidenced by high weight on the initial click, and "upweighting" of late-arriving sound, as evidenced by weights that gradually increased over the duration of each click-train. Across all tested click-train durations, and despite randomly varying the durations from trial to trial, the greatest post-onset weights were consistently found for clicks at or near the offset. The results imply a special importance of late-arriving sound rather than feedforward recovery from onset dominance, and are broadly consistent with recency effects resulting from temporal integration.

Original languageEnglish (US)
Pages (from-to)3914-3924
Number of pages11
JournalJournal of the Acoustical Society of America
Volume125
Issue number6
DOIs
StatePublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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