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Evidence for Pitch Chroma Mapping in Human Auditory Cortex

Some areas in auditory cortex respond preferentially to sounds that elicit pitch, such as musical sounds or voiced speech. This study used human electroencephalography (EEG) with an adaptation paradigm to investigate how pitch is represented within these areas and, in particular, whether the represe...

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Detalles Bibliográficos
Autores principales: Briley, Paul M., Breakey, Charlotte, Krumbholz, Katrin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Oxford University Press 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3792739/
https://www.ncbi.nlm.nih.gov/pubmed/22918980
http://dx.doi.org/10.1093/cercor/bhs242
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author Briley, Paul M.
Breakey, Charlotte
Krumbholz, Katrin
author_facet Briley, Paul M.
Breakey, Charlotte
Krumbholz, Katrin
author_sort Briley, Paul M.
collection PubMed
description Some areas in auditory cortex respond preferentially to sounds that elicit pitch, such as musical sounds or voiced speech. This study used human electroencephalography (EEG) with an adaptation paradigm to investigate how pitch is represented within these areas and, in particular, whether the representation reflects the physical or perceptual dimensions of pitch. Physically, pitch corresponds to a single monotonic dimension: the repetition rate of the stimulus waveform. Perceptually, however, pitch has to be described with 2 dimensions, a monotonic, “pitch height,” and a cyclical, “pitch chroma,” dimension, to account for the similarity of the cycle of notes (c, d, e, etc.) across different octaves. The EEG adaptation effect mirrored the cyclicality of the pitch chroma dimension, suggesting that auditory cortex contains a representation of pitch chroma. Source analysis indicated that the centroid of this pitch chroma representation lies somewhat anterior and lateral to primary auditory cortex.
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spelling pubmed-37927392013-10-17 Evidence for Pitch Chroma Mapping in Human Auditory Cortex Briley, Paul M. Breakey, Charlotte Krumbholz, Katrin Cereb Cortex Articles Some areas in auditory cortex respond preferentially to sounds that elicit pitch, such as musical sounds or voiced speech. This study used human electroencephalography (EEG) with an adaptation paradigm to investigate how pitch is represented within these areas and, in particular, whether the representation reflects the physical or perceptual dimensions of pitch. Physically, pitch corresponds to a single monotonic dimension: the repetition rate of the stimulus waveform. Perceptually, however, pitch has to be described with 2 dimensions, a monotonic, “pitch height,” and a cyclical, “pitch chroma,” dimension, to account for the similarity of the cycle of notes (c, d, e, etc.) across different octaves. The EEG adaptation effect mirrored the cyclicality of the pitch chroma dimension, suggesting that auditory cortex contains a representation of pitch chroma. Source analysis indicated that the centroid of this pitch chroma representation lies somewhat anterior and lateral to primary auditory cortex. Oxford University Press 2013-11 2012-08-23 /pmc/articles/PMC3792739/ /pubmed/22918980 http://dx.doi.org/10.1093/cercor/bhs242 Text en © The Author 2012. Published by Oxford University Press. http://creativecommons.org/licenses/by-nc/3.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Articles
Briley, Paul M.
Breakey, Charlotte
Krumbholz, Katrin
Evidence for Pitch Chroma Mapping in Human Auditory Cortex
title Evidence for Pitch Chroma Mapping in Human Auditory Cortex
title_full Evidence for Pitch Chroma Mapping in Human Auditory Cortex
title_fullStr Evidence for Pitch Chroma Mapping in Human Auditory Cortex
title_full_unstemmed Evidence for Pitch Chroma Mapping in Human Auditory Cortex
title_short Evidence for Pitch Chroma Mapping in Human Auditory Cortex
title_sort evidence for pitch chroma mapping in human auditory cortex
topic Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3792739/
https://www.ncbi.nlm.nih.gov/pubmed/22918980
http://dx.doi.org/10.1093/cercor/bhs242
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