Right-lateralized unconscious, but not conscious, processing of affective environmental sounds

Hdl Handle:
http://hdl.handle.net/10034/581799
Title:
Right-lateralized unconscious, but not conscious, processing of affective environmental sounds
Authors:
Schepman, Astrid ( 0000-0002-7407-362x ) ; Rodway, Paul ( 0000-0002-7667-6782 ) ; Pritchard, Hayley
Abstract:
Much research on the laterality of affective auditory stimuli features emotional speech. However, environmental sounds can also carry affective information, but their lateralized processing for affect has been studied much less. We studied this in 2 experiments. In Experiment 1 we explored whether the detection of affective environmental sounds (from International Affective Digital Sounds) that appeared in auditory scenes was lateralized. While we found that negative targets were detected more rapidly, detection latencies were the same on the left and right. In Experiment 2 we examined whether conscious appraisal of the stimulus was needed for lateralization patterns to emerge, and asked participants to rate the stimuli's pleasantness in a dichotic listening test. This showed that when positive/negative environmental sounds were in the attended to-be-rated channel, ratings were the same regardless of laterality. However, when participants rated neutral stimuli and the unattended channel was positive/negative, the valence of the unattended channel affected the neutral ratings more strongly with left ear (right hemisphere, RH) processing of the affective sound. We link our findings to previous work that suggests that the RH may specialize in the unconscious processing of emotion via subcortical routes.
Affiliation:
Department of Psychology, University of Chester
Citation:
Schepman, A., Rodway, P., & Pritchard, H. (2016). Right-lateralized unconscious, but not conscious, processing of affective environmental sounds. Laterality: Asymmetries of Body, Brain and Cognition, 21(4-6), 606-632. doi:10.1080/1357650X.2015.1105245
Publisher:
Taylor & Francis
Journal:
Laterality: Asymmetries of Body, Brain and Cognition.
Publication Date:
29-Oct-2015
URI:
http://hdl.handle.net/10034/581799
Additional Links:
http://dx.doi.org/10.1080/1357650X.2015.1105245
Type:
Article
Language:
en
Description:
Journal article - this version is early online. Print version to follow.
ISSN:
1464-0678; 1357-650X
Sponsors:
University of Chester internal grant
Appears in Collections:
Psychology

Full metadata record

DC FieldValue Language
dc.contributor.authorSchepman, Astriden
dc.contributor.authorRodway, Paulen
dc.contributor.authorPritchard, Hayleyen
dc.date.accessioned2015-11-05T09:43:53Zen
dc.date.available2015-11-05T09:43:53Zen
dc.date.issued2015-10-29en
dc.identifier.citationSchepman, A., Rodway, P., & Pritchard, H. (2016). Right-lateralized unconscious, but not conscious, processing of affective environmental sounds. Laterality: Asymmetries of Body, Brain and Cognition, 21(4-6), 606-632. doi:10.1080/1357650X.2015.1105245en
dc.identifier.issn1464-0678en
dc.identifier.issn1357-650Xen
dc.identifier.urihttp://hdl.handle.net/10034/581799en
dc.descriptionJournal article - this version is early online. Print version to follow.en
dc.description.abstractMuch research on the laterality of affective auditory stimuli features emotional speech. However, environmental sounds can also carry affective information, but their lateralized processing for affect has been studied much less. We studied this in 2 experiments. In Experiment 1 we explored whether the detection of affective environmental sounds (from International Affective Digital Sounds) that appeared in auditory scenes was lateralized. While we found that negative targets were detected more rapidly, detection latencies were the same on the left and right. In Experiment 2 we examined whether conscious appraisal of the stimulus was needed for lateralization patterns to emerge, and asked participants to rate the stimuli's pleasantness in a dichotic listening test. This showed that when positive/negative environmental sounds were in the attended to-be-rated channel, ratings were the same regardless of laterality. However, when participants rated neutral stimuli and the unattended channel was positive/negative, the valence of the unattended channel affected the neutral ratings more strongly with left ear (right hemisphere, RH) processing of the affective sound. We link our findings to previous work that suggests that the RH may specialize in the unconscious processing of emotion via subcortical routes.en
dc.description.sponsorshipUniversity of Chester internal granten
dc.language.isoenen
dc.publisherTaylor & Francisen
dc.relation.urlhttp://dx.doi.org/10.1080/1357650X.2015.1105245en
dc.subjectAuditory Emotionen
dc.subjectImpliciten
dc.subjectExpliciten
dc.subjectAttentionen
dc.subjectFunctional Hemispheric Asymmetryen
dc.subjectbrainen
dc.subjectlateralityen
dc.subjectconsciousnessen
dc.titleRight-lateralized unconscious, but not conscious, processing of affective environmental soundsen
dc.typeArticleen
dc.contributor.departmentDepartment of Psychology, University of Chesteren
dc.identifier.journalLaterality: Asymmetries of Body, Brain and Cognition.en
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