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Dissertation
Auditory localization as revealed by functional magnetic resonance imaging
Doctor of Philosophy (Ph.D.), Drexel University
Aug 2004
DOI:
https://doi.org/10.17918/etd-356
Abstract
The purpose of this study was to investigate the role of the parietal lobe in auditory localization through functional magnetic resonance imaging (fMRI). Previous cortical lesion research as well as research conducted with positron emission topography suggests that the parietal lobe is involved in the ability to localize the direction of a sound source. The right parietal lobe may play a particularly important role. Nine participants, wearing headset microphones that hung down within the auditory canal, sat on a chair in the middle of a room. Sound recordings were taken from eight different locations around them (0°, 45°, 90°, 135°, 180°, 225°, 270°, & 315°). These recordings were played back for the participants through a set of headphones while in the MRI scanner and participants were instructed to try to determine the location of the sound. Results revealed bilateral activation of the temporal, frontal, and parietal lobes. A region of interest analysis of the parietal lobes revealed that the right hemisphere was not significantly more active than the left parietal lobe during the localization task. This finding was inconsistent with the hypothesis that significantly more activation in the right parietal lobe would occur during auditory localization tasks.
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Details
- Title
- Auditory localization as revealed by functional magnetic resonance imaging
- Creators
- Jessica Marie Matthes - DU
- Contributors
- J. Michael Williams (Advisor) - Drexel University, Psychological and Brain Sciences (Psychology)
- Awarding Institution
- Drexel University
- Degree Awarded
- Doctor of Philosophy (Ph.D.)
- Publisher
- Drexel University; Philadelphia, Pennsylvania
- Resource Type
- Dissertation
- Language
- English
- Academic Unit
- Psychological and Brain Sciences (Psychology); College of Arts and Sciences; Drexel University
- Other Identifier
- 356; 991014632386104721