Implicit versus Explicit Frequency Comparisons: Two Mechanisms of Auditory Change Detection

Autor/inn/en	Demany, Laurent; Semal, Catherine; Pressnitzer, Daniel
Titel	Implicit versus Explicit Frequency Comparisons: Two Mechanisms of Auditory Change Detection
Quelle	In: Journal of Experimental Psychology: Human Perception and Performance, 37 (2011) 2, S.597-605 (9 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0096-1523
DOI	10.1037/a0020368
Schlagwörter	Experimental Psychology; Auditory Stimuli; Auditory Perception; Auditory Discrimination; Acoustics; Memory; Cues; College Students + Suchen Sie Ihr Suchwort? Experimentelle Psychologie; Auditive Stimulation; Auditive Wahrnehmung; Akustische Wahrnehmung; Akustik; Gedächtnis; Stichwort; Collegestudent
Abstract	Listeners had to compare, with respect to pitch (frequency), a pure tone (T) to a combination of pure tones presented subsequently (C). The elements of C were either synchronous, and therefore difficult to hear out individually, or asynchronous and therefore easier to hear out individually. In the "present/absent" condition, listeners had to judge if T reappeared in C or not. In the "up/down" condition, the task was to judge if the element of C most similar to T was higher or lower than T. When the elements of C were synchronous, the up/down task was found to be easier than the present/absent task; the converse result was obtained when the elements of C were asynchronous. This provides evidence for a duality of auditory comparisons between tone frequencies: (1) implicit comparisons made by automatic and direction-sensitive "frequency-shift detectors"; (2) explicit comparisons more sensitive to the magnitude of a frequency change than to its direction. Another experiment suggests that although the frequency-shift detectors cannot compare effectively two tones separated by an interfering tone, they are largely insensitive to interfering noise bursts. (Contains 3 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10