| Neural process underlying gap detection for spectrally rich and asymmetrical markers. | |
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MedLine Citation:
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PMID: 19590396 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Processing of silent gaps of the order of milliseconds is crucial in speech perception. To investigate such process, we compared gap detection for spectrally symmetrical, slightly or widely asymmetrical markers, using the mismatch negativity (MMN), an index of preattentive change detection in the brain. The slightly asymmetrical markers declined the MMN amplitude alone, but the widely asymmetrical markers affected both the MMN amplitude and latency, suggesting that the influence of spectrally asymmetrical markers on gap detection is not uniform across different magnitude of asymmetries. In contrast to the prevailing view, the MMN obtained indicated that the effects of marker asymmetry took place as early as at preattentive stage. |
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Authors:
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Rika Takegata; Roope Heikkilä; Risto Näätänen |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Neuroreport Volume: 20 ISSN: 1473-558X ISO Abbreviation: Neuroreport Publication Date: 2009 Aug |
Date Detail:
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Created Date: 2009-07-10 Completed Date: 2009-09-29 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9100935 Medline TA: Neuroreport Country: England |
Other Details:
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Languages: eng Pagination: 1120-4 Citation Subset: IM |
Affiliation:
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Department of Psychology, Cognitive Brain Research Unit, University of Helsinki, Helsinki, Finland. rika.takegata@helsinki.fi |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Adult Analysis of Variance Auditory Perception / physiology* Brain / physiology* Electroencephalography Evoked Potentials, Auditory Female Humans Male Neuropsychological Tests Psychoacoustics Signal Detection, Psychological / physiology* Speech Perception / physiology* Time Factors Young Adult |
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