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Preferential processing of tactile events under conditions of divided attention

Identifieur interne : 001A64 ( Pmc/Corpus ); précédent : 001A63; suivant : 001A65

Preferential processing of tactile events under conditions of divided attention

Auteurs : James V. M. Hanson ; David Whitaker ; James Heron

Source :

RBID : PMC:3364445

Abstract

Differences in transduction and transmission latencies of visual, auditory and tactile events cause corresponding differences in simple reaction time. As reaction time is usually measured in unimodal blocks, it is unclear whether such latency differences also apply when observers monitor multiple sensory channels. We investigate this by comparing reaction time when attention is focussed on a single modality, and when attention is divided between multiple modalities. Results show that tactile reaction time is unaffected by dividing attention, whilst visual and auditory reaction times are significantly and asymmetrically increased. These findings show that tactile information is processed preferentially by the nervous system under conditions of divided attention, and suggest that tactile events may be processed pre-attentively.


Url:
DOI: 10.1097/WNR.0b013e3283319e25
PubMed: 19738497
PubMed Central: 3364445

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