Optimal Integration of Auditory and Vibrotactile Information for Judgments of Temporal Order

Autor/inn/en	Ley, Ian; Haggard, Patrick; Yarrow, Kielan
Titel	Optimal Integration of Auditory and Vibrotactile Information for Judgments of Temporal Order
Quelle	In: Journal of Experimental Psychology: Human Perception and Performance, 35 (2009) 4, S.1005-1019 (15 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0096-1523
DOI	10.1037/a0015021
Schlagwörter	Stimuli; Sensory Integration; Auditory Stimuli; Tactual Perception; Serial Ordering; Time Perspective; Evaluative Thinking; Spatial Ability; Asynchronous Communication + Suchen Sie Ihr Suchwort? Anreizsystem; Sensorische Integration; Auditive Stimulation; Taktile Wahrnehmung; Ordnen; Ordnungsstruktur; Ordnungssystem; Zeitbezug; Räumliches Vorstellungsvermögen
Abstract	Recent research that assessed spatial judgments about multisensory stimuli suggests that humans integrate multisensory inputs in a statistically optimal manner by weighting each input by its normalized reciprocal variance. Is integration similarly optimal when humans judge the temporal properties of bimodal stimuli? Twenty-four participants performed temporal order judgments (TOJs) about 2 spatially separated stimuli. Stimuli were auditory, vibrotactile, or both. The temporal profiles of vibrotactile stimuli were manipulated to produce 3 levels of precision for TOJs. In bimodal conditions, the asynchrony between the 2 unimodal stimuli that comprised a bimodal stimulus was manipulated to determine the weight given to touch. Bimodal performance on 2 measures--judgment uncertainty and tactile weight--was predicted with unimodal data. A model relying exclusively on audition was rejected on the basis of both measures. A second model that selected the best input on each trial did not predict the reduced judgment uncertainty observed in bimodal trials. Only the optimal maximum-likelihood-estimation model predicted both judgment uncertainties and weights; the model's validity is extended to TOJs. Alternatives for modeling the process of event sequencing based on integrated multisensory inputs are discussed. (Contains 6 tables and 5 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10