Cortical organization of environmental sounds by attribute
Version of Record online: 9 MAR 2011
Copyright © 2011 Wiley-Liss, Inc.
Human Brain Mapping
Volume 32, Issue 5, pages 688–698, May 2011
How to Cite
Hocking, J., McMahon, K. L. and de Zubicaray, G. I. (2011), Cortical organization of environmental sounds by attribute. Hum. Brain Mapp., 32: 688–698. doi: 10.1002/hbm.21040
- Issue online: 11 APR 2011
- Version of Record online: 9 MAR 2011
- Manuscript Accepted: 8 FEB 2010
- Manuscript Revised: 1 FEB 2010
- Manuscript Received: 22 OCT 2009
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. Hum Brain Mapp, 2011. © 2011 Wiley-Liss, Inc.