| Relative alpha desynchronization and synchronization during speech perception. | |
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MedLine Citation:
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PMID: 9197516 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Brain processes elicited by speech were studied in 10 right-handed subjects by means of examining the desynchronization and synchronization of the 8-10 Hz and 10-12 Hz EEG alpha frequency bands. The subjects listened to an auditorily presented 5 min text passage. The text was presented both forward and backward. Listening to the text forward elicited alpha desynchronization in both of the frequency bands studied, whereas listening to the same text presented backward elicited synchronization in the 10-12 Hz frequency band only. Listening to the text forward elicited greater desynchronization than listening to the text backward. In the 10-12 Hz frequency band, listening to the text forward elicited desynchronization whereas listening to the same text backward elicited synchronization. This dissociation was not observed in the 8-10 Hz frequency band. The results suggest that the lower and upper alpha bands differ such that the 10-12 Hz frequency band exhibits reactivity to the presence of linguistic content while the 8-10 Hz band shows an unspecific response. |
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Authors:
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C M Krause; B Pörn; A H Lang; M Laine |
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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: Brain research. Cognitive brain research Volume: 5 ISSN: 0926-6410 ISO Abbreviation: Brain Res Cogn Brain Res Publication Date: 1997 Jun |
Date Detail:
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Created Date: 1997-08-25 Completed Date: 1997-08-25 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9214304 Medline TA: Brain Res Cogn Brain Res Country: NETHERLANDS |
Other Details:
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Languages: eng Pagination: 295-9 Citation Subset: IM |
Affiliation:
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Department of Psychology, Abo Akademi University, Turku, Finland. tkrause@abo.fi |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation
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methods Adult Alpha Rhythm* Female Humans Male Speech Perception / physiology* Time Factors |
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