Journal article
Separating pitch chroma and pitch height in the human brain
Proceedings of the National Academy of Sciences - PNAS, Vol.100(17), pp.10038-10042
08/19/2003
DOI: 10.1073/pnas.1730682100
PMCID: PMC187755
PMID: 12909719
Abstract
Musicians recognize pitch as having two dimensions. On the keyboard, these
are illustrated by the octave and the cycle of notes within the octave. In
perception, these dimensions are referred to as pitch height and pitch chroma,
respectively. Pitch chroma provides a basis for presenting acoustic patterns
(melodies) that do not depend on the particular sound source. In contrast,
pitch height provides a basis for segregation of notes into streams to
separate sound sources. This paper reports a functional magnetic resonance
experiment designed to search for distinct mappings of these two types of
pitch change in the human brain. The results show that chroma change is
specifically represented anterior to primary auditory cortex, whereas height
change is specifically represented posterior to primary auditory cortex. We
propose that tracking of acoustic information streams occurs in anterior
auditory areas, whereas the segregation of sound objects (a crucial aspect of
auditory scene analysis) depends on posterior areas.
Details
- Title: Subtitle
- Separating pitch chroma and pitch height in the human brain
- Creators
- J. D. Warren - National Hospital for Neurology and NeurosurgeryS. Uppenkamp - University of CambridgeR. D. Patterson - National Hospital for Neurology and NeurosurgeryT. D. Griffiths - National Hospital for Neurology and Neurosurgery
- Resource Type
- Journal article
- Publication Details
- Proceedings of the National Academy of Sciences - PNAS, Vol.100(17), pp.10038-10042
- Publisher
- National Academy of Sciences
- DOI
- 10.1073/pnas.1730682100
- PMID
- 12909719
- PMCID
- PMC187755
- ISSN
- 0027-8424
- eISSN
- 1091-6490
- Language
- English
- Date published
- 08/19/2003
- Academic Unit
- Psychological and Brain Sciences
- Record Identifier
- 9984627193402771
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