| Dichotic pitch activates pitch processing centre in Heschl's gyrus. | |
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MedLine Citation:
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PMID: 19782757 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Although several neuroimaging studies have reported pitch-evoked activations at the lateral end of Heschl's gyrus, it is still under debate whether these findings truly represent activity in relation to the perception of pitch or merely stimulus-related features of pitch-evoking sounds. We investigated this issue in a functional magnetic resonance imaging (fMRI) experiment using pure tones in noise and dichotic pitch sequences, which either contained a melody or a fixed pitch. Dichotic pitch evokes a sensation of pitch only in binaural listening conditions, while the monaural signal cannot be distinguished from random noise. Our data show similar neural activations for both tones in noise and dichotic pitch, which are perceptually similar, but physically different. Pitch-related activation was found at the lateral end of Heschl's gyrus in both hemispheres, providing new evidence for a general involvement of this region in pitch processing. In line with prior studies, we found melody-related activation in Planum temporale and Planum polare, but not in primary auditory areas. These results support the view of a general representation of pitch in auditory cortex, irrespective of the physical attributes of the pitch-evoking sound. |
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Authors:
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Sebastian Puschmann; Stefan Uppenkamp; Birger Kollmeier; Christiane M Thiel |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-09-25 |
Journal Detail:
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Title: NeuroImage Volume: 49 ISSN: 1095-9572 ISO Abbreviation: Neuroimage Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2009-12-07 Completed Date: 2010-02-12 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9215515 Medline TA: Neuroimage Country: United States |
Other Details:
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Languages: eng Pagination: 1641-9 Citation Subset: IM |
Affiliation:
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Cognitive Neurobiology, Institute of Psychology, Carl von Ossietzky University Oldenburg, Oldenburg, Germany. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Adult Auditory Cortex / physiology* Brain Mapping Discrimination (Psychology) Female Functional Laterality Humans Magnetic Resonance Imaging Male Music Pitch Perception / physiology* Psychoacoustics Task Performance and Analysis Temporal Lobe / physiology* Young Adult |
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