Cortical organization of environmental sounds by attribute

Hocking, Julia, McMahon, Katie L., & de Zubicaray, Greig I. (2011) Cortical organization of environmental sounds by attribute. Human Brain Mapping, 32(5), pp. 688-698.

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Abstract

Semantic knowledge is supported by a widely distributed neuronal network, with differential patterns of activation depending upon experimental stimulus or task demands. Despite a wide body of knowledge on semantic object processing from the visual modality, the response of this semantic network to environmental sounds remains relatively unknown. Here, we used fMRI to investigate how access to different conceptual attributes from environmental sound input modulates this semantic network. Using a range of living and manmade sounds, we scanned participants whilst they carried out an object attribute verification task. Specifically, we tested visual perceptual, encyclopedic, and categorical attributes about living and manmade objects relative to a high-level auditory perceptual baseline to investigate the differential patterns of response to these contrasting types of object-related attributes, whilst keeping stimulus input constant across conditions. Within the bilateral distributed network engaged for processing environmental sounds across all conditions, we report here a highly significant dissociation within the left hemisphere between the processing of visual perceptual and encyclopedic attributes of objects.

Impact and interest:

2 citations in Scopus
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1 citations in Web of Science®

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ID Code: 74090
Item Type: Journal Article
Refereed: Yes
Keywords: environmental sounds, object attribute, Auditory Perception, Brain Mapping, functional MRI, Reaction Time, Semantics
DOI: 10.1002/hbm.21040
ISSN: 1097-0193
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > NEUROSCIENCES (110900) > Central Nervous System (110903)
Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > NEUROSCIENCES (110900) > Sensory Systems (110906)
Australian and New Zealand Standard Research Classification > PSYCHOLOGY AND COGNITIVE SCIENCES (170000) > COGNITIVE SCIENCE (170200) > Linguistic Processes (incl. Speech Production and Comprehension) (170204)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Psychology & Counselling
Deposited On: 18 Jul 2014 00:16
Last Modified: 31 Jul 2015 05:34

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