Journal article
Encoding of Spectral Correlation over Time in Auditory Cortex
The Journal of neuroscience, Vol.28(49), pp.13268-13273
12/03/2008
DOI: 10.1523/JNEUROSCI.4596-08.2008
PMCID: PMC3844743
PMID: 19052218
Abstract
Natural sounds contain multiple spectral components that vary over time. The degree of variation can be characterized in terms of correlation between successive time frames of the spectrum, or as a time window within which any two frames show a minimum degree of correlation: the greater the correlation of the spectrum between successive time frames, the longer the time window. Recent studies suggest differences in the encoding of shorter and longer time windows in left and right auditory cortex, respectively. The present functional magnetic resonance imaging study assessed brain activation in response to the systematic variation of the time window in complex spectra that are more similar to natural sounds than in previous studies. The data show bilateral activity in the planum temporale and anterior superior temporal gyrus as a function of increasing time windows, as well as activity in the superior temporal sulcus that was significantly lateralized to the right. The results suggest a coexistence of hierarchical and lateralization schemes for representing increasing time windows in auditory association cortex.
Details
- Title: Subtitle
- Encoding of Spectral Correlation over Time in Auditory Cortex
- Creators
- Tobias Overath - Wellcome Centre for Human NeuroimagingSukhbinder Kumar - Univ Newcastle, Sch Med, Newcastle Auditory Grp, Newcastle Upon Tyne NE2 4HH, Tyne & Wear, EnglandKatharina von Kriegstein - UCL, Inst Neurol, Wellcome Trust Ctr Neuroimaging, London WC1N 3AR, EnglandTimothy D. Griffiths - UCL, Inst Neurol, Wellcome Trust Ctr Neuroimaging, London WC1N 3AR, England
- Resource Type
- Journal article
- Publication Details
- The Journal of neuroscience, Vol.28(49), pp.13268-13273
- DOI
- 10.1523/JNEUROSCI.4596-08.2008
- PMID
- 19052218
- PMCID
- PMC3844743
- NLM abbreviation
- J Neurosci
- ISSN
- 0270-6474
- eISSN
- 1529-2401
- Publisher
- Soc Neuroscience
- Number of pages
- 6
- Grant note
- Wellcome Trust (UK); Wellcome Trust
- Language
- English
- Date published
- 12/03/2008
- Academic Unit
- Psychological and Brain Sciences; Neurosurgery
- Record Identifier
- 9984303898402771
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