Related Experiment Video
Updated: Jun 3, 2026
06:34
Infant Auditory Processing and Event-related Brain Oscillations
Published on: July 1, 2015
Cortical organization of environmental sounds by attribute.
Julia Hocking1, Katie L McMahon, Greig I de Zubicaray
1The University of Queensland, Centre for Advanced Imaging, St Lucia, Queensland 4072, Australia. julia.hocking@cmr.uq.edu.au
Human Brain Mapping
|March 11, 2011
Summary
This study reveals how the brain processes semantic knowledge from environmental sounds. Using fMRI, researchers found distinct left-hemisphere activity for visual perceptual versus encyclopedic attributes of objects accessed via sound.
Area of Science:
- Neuroscience
- Cognitive Science
- Auditory Perception
Background:
- Semantic knowledge relies on a distributed neuronal network.
- Visual object processing is well-studied, but auditory semantic processing is less understood.
- Environmental sounds activate this semantic network differently based on stimuli.
Purpose of the Study:
- Investigate how environmental sounds modulate the semantic knowledge network.
- Examine differential brain activation patterns for various object attributes derived from sound.
- Contrast processing of visual perceptual, encyclopedic, and categorical attributes.
Main Methods:
- Used functional magnetic resonance imaging (fMRI) to scan participants.
- Presented participants with living and manmade environmental sounds.
- Employed an object attribute verification task focusing on visual perceptual, encyclopedic, and categorical attributes.
Main Results:
- Identified a bilateral distributed network for processing environmental sounds.
- Reported a significant dissociation within the left hemisphere.
- Demonstrated distinct processing for visual perceptual and encyclopedic attributes accessed through sound.
Conclusions:
- The semantic network shows specialized processing for different attribute types from auditory input.
- Environmental sounds differentially engage semantic knowledge networks in the left hemisphere.
- Auditory semantic processing involves distinct neural pathways for perceptual and factual information.
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