Sharp edge artifacts and spurious coupling in EEG frequency comodulation measures
Recent electroencephalogram (EEG), electrocorticogram (ECoG), and local field potential (LFP) observations suggest that distinct frequency bands interact. Numerous measures have been proposed to analyze such interactions, including the amplitude envelope modulation of high frequency activity by the...
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| Published in | Journal of neuroscience methods Vol. 170; no. 2; pp. 352 - 357 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Netherlands
Elsevier B.V
30.05.2008
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0165-0270 1872-678X |
| DOI | 10.1016/j.jneumeth.2008.01.020 |
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| Abstract | Recent electroencephalogram (EEG), electrocorticogram (ECoG), and local field potential (LFP) observations suggest that distinct frequency bands interact. Numerous measures have been proposed to analyze such interactions, including the amplitude envelope modulation of high frequency activity by the phase or signal of low frequency activity. In this short communication, we describe how abrupt increases or decreases in voltage data may produce spurious coupling in these measures and suggest techniques to detect these effects. |
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| AbstractList | Recent electroencephalogram (EEG), electrocorticogram (ECoG), and local field potential (LFP) observations suggest that distinct frequency bands interact. Numerous measures have been proposed to analyze such interactions, including the amplitude envelope modulation of high frequency activity by the phase or signal of low frequency activity. In this short communication, we describe how abrupt increases or decreases in voltage data may produce spurious coupling in these measures and suggest techniques to detect these effects. Recent electroencephalogram (EEG), electrocorticogram (ECoG), and local field potential (LFP) observations suggest that distinct frequency bands interact. Numerous measures have been proposed to analyze such interactions, including the amplitude envelope modulation of high frequency activity by the phase or signal of low frequency activity. In this short communication, we describe how abrupt increases or decreases in voltage data may produce spurious coupling in these measures and suggest techniques to detect these effects.Recent electroencephalogram (EEG), electrocorticogram (ECoG), and local field potential (LFP) observations suggest that distinct frequency bands interact. Numerous measures have been proposed to analyze such interactions, including the amplitude envelope modulation of high frequency activity by the phase or signal of low frequency activity. In this short communication, we describe how abrupt increases or decreases in voltage data may produce spurious coupling in these measures and suggest techniques to detect these effects. |
| Author | Tort, Adriano B.L. Kramer, Mark A. Kopell, Nancy J. |
| Author_xml | – sequence: 1 givenname: Mark A. surname: Kramer fullname: Kramer, Mark A. email: mak@bu.edu organization: Department of Mathematics and Statistics & Center for BioDynamics, Boston University, Boston, MA 02215, USA – sequence: 2 givenname: Adriano B.L. surname: Tort fullname: Tort, Adriano B.L. organization: Department of Mathematics and Statistics & Center for BioDynamics, Boston University, Boston, MA 02215, USA – sequence: 3 givenname: Nancy J. surname: Kopell fullname: Kopell, Nancy J. organization: Department of Mathematics and Statistics & Center for BioDynamics, Boston University, Boston, MA 02215, USA |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/18328571$$D View this record in MEDLINE/PubMed |
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| SubjectTerms | Alpha Rhythm Computer Simulation Data Interpretation, Statistical Electroencephalography - statistics & numerical data Electrophysiology Evoked Potentials - physiology Frequency comodulation Gamma Hilbert transform Nesting Software Theta Theta Rhythm |
| Title | Sharp edge artifacts and spurious coupling in EEG frequency comodulation measures |
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