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| Research article summary (published 29 Nov 2002): |
Auditory temporal gap detection for noise markers with partially overlapping and non-overlapping spectra.
Full Abstract
Temporal gap detection thresholds were obtained from six listeners using an adaptive tracking method and constant spectrum-level noises. In separate blocks of trials, the markers bounding the gap were systematically varied in their spectral overlap or separation (expressed in equivalent rectangular bandwidths, ERBs). In the same listeners, gap thresholds were also obtained for noises of the same bandwidths as those constituting the overlap in the overlap conditions (in the presence of a wideband notched noise masker:
'mask' conditions). For the spectral overlap/separation conditions, gap thresholds were a systematic, linear function of spectral dissimilarity in four of six listeners. In the mask conditions, gap thresholds were inversely related to bandwidth in all listeners. For the three-, four- and five-ERB conditions, gap thresholds in the same listeners for the spectral overlap conditions were higher than those for mask stimuli with the same available within-channel bandwidth and spectrum levels. These data suggest that the spectral dissimilarity between the markers over-rode the availability of within-channel information in the recovery of the temporal gap.
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Author information
Author/s: Phillips, D P (DP); Hall, S E (SE);
Affiliation: Hearing Research Laboratory, Department of Psychology, Dalhousie University, B3H 4J1, Halifax, NS, Canada. dennis.phillips@dal.ca
Journal and publication information
Publication Type: Journal Article; Research Support, Non-U.S. Gov't
Journal: Hearing research (Hear Res), published in Netherlands. (Language: eng)
Reference: 2002-Dec; vol 174 (issue 1-2) : pp 133-41
Dates: Created 2002/11/15; Completed 2003/05/02; Revised 2006/11/15;
PMID: 12433404, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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