| Estimation of short-time cross-correlation between frequency bands of event related EEG. | |
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MedLine Citation:
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PMID: 16740314 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Simultaneous variations of the event-related power changes (ERD/ERS) are often observed in a number of frequency bands. ERD/ERS measures are usually based on the relative changes of power in a given single frequency band. Within such an approach one cannot answer questions concerning the mutual relations between the band-power variations observed in different frequency bands. This paper addresses the problem of estimating and assessing the significance of the average cross-correlation between ERD/ERS phenomena occurring in two frequency bands. The cross-correlation function in a natural way also provides estimation of the delay between ERD/ERS in those bands. The proposed method is based on estimating the short-time cross-correlation function between relative changes of power in two selected frequency bands. The cross-correlation function is estimated in each trial separately and then averaged across trials. The significance of those mean cross-correlation functions is evaluated by means of a nonparametric test. The basic properties of the method are presented on simulated signals, and an example application to real EEG and ECoG signals is given. |
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Authors:
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J Zygierewicz; J Mazurkiewicz; P J Durka; P J Franaszczuk; N E Crone |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural Date: 2006-06-05 |
Journal Detail:
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Title: Journal of neuroscience methods Volume: 157 ISSN: 0165-0270 ISO Abbreviation: J. Neurosci. Methods Publication Date: 2006 Oct |
Date Detail:
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Created Date: 2006-09-11 Completed Date: 2006-12-12 Revised Date: 2007-12-03 |
Medline Journal Info:
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Nlm Unique ID: 7905558 Medline TA: J Neurosci Methods Country: Netherlands |
Other Details:
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Languages: eng Pagination: 294-302 Citation Subset: IM |
Affiliation:
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Department of Biomedical Physics, Institute of Experimental Physics, Warsaw University, ul. Hoza 69, 00-681 Warszawa, Poland. jarekz@fuw.edu.pl |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Brain / physiology* Cortical Synchronization / methods* Evoked Potentials / physiology Humans Male |
| Grant Support | |
ID/Acronym/Agency:
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R01 NS38958/NS/NINDS NIH HHS; R01 NS40596/NS/NINDS NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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