Developmental trends in the facilitation of multisensory objects with distractors

Sensory integration and the ability to discriminate target objects from distractors are critical to survival, yet the developmental trajectories of these abilities are unknown. This study investigated developmental changes in 9- (n=18) and 11-year-old (n=20) children, adolescents (n=19) and adults (...

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Main Authors: Harriet eDowning, Ayla eBarutchu, Sheila Gillard Crewther
Format: Article
Language:English
Published: Frontiers Media S.A. 2015-01-01
Series:Frontiers in Psychology
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.01559/full
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author Harriet eDowning
Ayla eBarutchu
Sheila Gillard Crewther
author_facet Harriet eDowning
Ayla eBarutchu
Sheila Gillard Crewther
author_sort Harriet eDowning
collection DOAJ
description Sensory integration and the ability to discriminate target objects from distractors are critical to survival, yet the developmental trajectories of these abilities are unknown. This study investigated developmental changes in 9- (n=18) and 11-year-old (n=20) children, adolescents (n=19) and adults (n=22) using an audiovisual object discrimination task with uni- and multisensory distractors. Reaction times (RTs) were slower with visual/audiovisual distractors, and although all groups demonstrated facilitation of multisensory RTs in these conditions, children’s and adolescents’ responses corresponded to fewer race model violations than adults’, suggesting protracted maturation of multisensory processes. Multisensory facilitation could not be explained by changes in RT variability, suggesting that tests of race model violations may still have theoretical value at least for familiar multisensory stimuli.
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spelling doaj.art-68f4c79240634153ba36540dcec2e9002022-12-22T02:38:35ZengFrontiers Media S.A.Frontiers in Psychology1664-10782015-01-01510.3389/fpsyg.2014.01559124905Developmental trends in the facilitation of multisensory objects with distractorsHarriet eDowning0Ayla eBarutchu1Sheila Gillard Crewther2La Trobe UniversityUniversity of OxfordLa Trobe UniversitySensory integration and the ability to discriminate target objects from distractors are critical to survival, yet the developmental trajectories of these abilities are unknown. This study investigated developmental changes in 9- (n=18) and 11-year-old (n=20) children, adolescents (n=19) and adults (n=22) using an audiovisual object discrimination task with uni- and multisensory distractors. Reaction times (RTs) were slower with visual/audiovisual distractors, and although all groups demonstrated facilitation of multisensory RTs in these conditions, children’s and adolescents’ responses corresponded to fewer race model violations than adults’, suggesting protracted maturation of multisensory processes. Multisensory facilitation could not be explained by changes in RT variability, suggesting that tests of race model violations may still have theoretical value at least for familiar multisensory stimuli.http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.01559/fullaudiovisualdevelopmentmultisensoryfacilitationrace modelvariance
spellingShingle Harriet eDowning
Ayla eBarutchu
Sheila Gillard Crewther
Developmental trends in the facilitation of multisensory objects with distractors
Frontiers in Psychology
audiovisual
development
multisensory
facilitation
race model
variance
title Developmental trends in the facilitation of multisensory objects with distractors
title_full Developmental trends in the facilitation of multisensory objects with distractors
title_fullStr Developmental trends in the facilitation of multisensory objects with distractors
title_full_unstemmed Developmental trends in the facilitation of multisensory objects with distractors
title_short Developmental trends in the facilitation of multisensory objects with distractors
title_sort developmental trends in the facilitation of multisensory objects with distractors
topic audiovisual
development
multisensory
facilitation
race model
variance
url http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.01559/full
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AT aylaebarutchu developmentaltrendsinthefacilitationofmultisensoryobjectswithdistractors
AT sheilagillardcrewther developmentaltrendsinthefacilitationofmultisensoryobjectswithdistractors