| Spectral responses in the gamma-band: physiological signs of higher cognitive processes? | |
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MedLine Citation:
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PMID: 8580440 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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It has recently been proposed that brain responses in the gamma-range (> 20 Hz) include information about specific cognitive processes in the human brain. Empirical data substantiating this assumption come from EEG and MEG recordings during visual and language processing. For example, 30 Hz activity has been found to be stronger during processing of words than during processing of meaningless but pronounceable pseudo-words. However, it has been reported that power changes in the gamma-band are sometimes artefacts of changes taking place in other frequencies, such as the alpha-band. In this study, we investigated power changes in frequency bands outside the gamma-range and found no evidence that such changes are related to the dynamics in gamma-power distinguishing between words and pseudowords. These results are consistent with the view that gamma-band responses are an indicator of lexical processing and other cognitive processes related to binding of stimulus features into a whole (Gestalt), as proposed by Singer. |
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Authors:
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F Pulvermüller; W Lutzenberger; H Preissl; N Birbaumer |
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: 6 ISSN: 0959-4965 ISO Abbreviation: Neuroreport Publication Date: 1995 Oct |
Date Detail:
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Created Date: 1996-03-19 Completed Date: 1996-03-19 Revised Date: 2006-11-15 |
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: 2059-64 Citation Subset: IM |
Affiliation:
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Institut für Medizinische Psychologie und Verhaltensneurobiologie Universität Tübingen, Germany. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Analysis of Variance Auditory Perception / physiology* Cognition / physiology* Electroencephalography Evoked Potentials / physiology Humans Language |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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