An Objective Measurement of the Build-Up of Auditory Streaming and of Its Modulation by Attention

Autor/inn/en	Thompson, Sarah K.; Carlyon, Robert P.; Cusack, Rhodri
Titel	An Objective Measurement of the Build-Up of Auditory Streaming and of Its Modulation by Attention
Quelle	In: Journal of Experimental Psychology: Human Perception and Performance, 37 (2011) 4, S.1253-1262 (10 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0096-1523
DOI	10.1037/a0021925
Schlagwörter	Auditory Stimuli; Attention; Intervals; Adults; Acoustics; Time Perspective; Performance; Task Analysis; Cognitive Processes + Suchen Sie Ihr Suchwort? Auditive Stimulation; Aufmerksamkeit; Akustik; Zeitbezug; Achievement; Leistung; Aufgabenanalyse; Cognitive process; Kognitiver Prozess
Abstract	Three experiments studied auditory streaming using sequences of alternating "ABA" triplets, where "A" and "B" were 50-ms tones differing in frequency by [delta]f semitones and separated by 75-ms gaps. Experiment 1 showed that detection of a short increase in the gap between a B tone and the preceding A tone, imposed on one ABA triplet, was better when the delay occurred early versus late in the sequence, and for [delta]f = 4 vs. [delta]f = 8. The results of this experiment were consistent with those of a subjective streaming judgment task. Experiment 2 showed that the detection of a delay 12.5 s into a 13.5-s sequence could be improved by requiring participants to perform a task on competing stimuli presented to the other ear for the first 10 s of that sequence. Hence, adding an additional task demand could improve performance via its effect on the perceptual organization of a sound sequence. The results demonstrate that attention affects streaming in an objective task and that the effects of build-up are not completely under voluntary control. In particular, even though build-up can impair performance in an objective task, participants are unable to prevent this from happening. (Contains 3 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10