Frequency-Shift Detectors Bind Binaural as Well as Monaural Frequency Representations.
Previous psychophysical work provided evidence for the existence of automatic frequency-shift detectors (FSDs) that establish perceptual links between successive sounds. In this study, we investigated the characteristics of the FSDs with respect to the binaural system. Listeners were presented with...
| Publicado en: | Journal of Experimental Psychology. Human Perception & Performance Vol. 37; no. 6; pp. 1976 - 1988 |
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| Autores principales: | , , |
| Formato: | Artículo |
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American Psychological Association
Dec2011
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=79433638&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 79433638 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00961523 EPH jtl: Journal of Experimental Psychology. Human Perception & Performance issn: 00961523 maglogo: N pubinfo: dt: Dec2011 vid: 37 iid: 6 pid: 34 pub: American Psychological Association artinfo: ui: 79433638 10.1037/a0024321 ppf: 1976 ppct: 12 formats: tig: atl: Frequency-Shift Detectors Bind Binaural as Well as Monaural Frequency Representations. aug: au: Carcagno, Samuele Semal, Catherine Demany, Laurent affil: Université de Bordeaux and CNRS su: Memory Hearing Sounds Auditory pathways Task analysis sug: subj: Memory Hearing Other Sound Recording Industries Sounds Auditory pathways Task analysis keyword: auditory memory binaural hearing dichotic pitch sequence perception temporal binding auditory memory binaural hearing dichotic pitch sequence perception temporal binding ab: Previous psychophysical work provided evidence for the existence of automatic frequency-shift detectors (FSDs) that establish perceptual links between successive sounds. In this study, we investigated the characteristics of the FSDs with respect to the binaural system. Listeners were presented with sound sequences consisting of a chord of pure tones followed by a single test tone. Two tasks were performed. In the "present/absent" task, the test tone was either identical to one of the chord components or positioned halfway in frequency between two components, and listeners had to discriminate between these two possibilities. In the "up/down" task, the test tone was slightly different in frequency from one of the chord components and listeners had to identify the direction (up or down) of the corresponding shift. When the test tone was a pure tone presented monaurally, either to the same ear as the chord or to the opposite ear, listeners performed the up/down task better than the present/absent task. This paradoxical advantage for directional frequency shifts, providing evidence for FSDs, persisted when the test tone was replaced by a dichotic stimulus consisting of noise but evoking a pitch sensation as a consequence of binaural processing. Performance in the up/down task was similar for the dichotic stimulus and for a monaural narrow-band noise matched in pitch salience to it. Our results indicate that the FSDs are insensitive to sound localization mechanisms and operate on central frequency representations, at or above the level of convergence of the monaural auditory pathways. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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