Enhancing the Signal of Corticomuscular Coherence
Joint Authors
Micheli, Cristiano
Braun, Christoph
Source
Computational and Mathematical Methods in Medicine
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-10
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The availability of multichannel neuroimaging techniques, such as MEG and EEG, provides us with detailed topographical information of the recorded magnetic and electric signals and therefore gives us a good overview on the concomitant signals generated in the brain.
To assess the location and the temporal dynamics of neuronal sources with noninvasive recordings, reconstruction tools such as beamformers have been shown to be useful.
In the current study, we are in particular interested in cortical motor control involved in the isometric contraction of finger muscles.
To this end we are measuring the interaction between the dynamics of brain signals and the electrical activity of hand muscles.
We were interested to find out whether in addition to the well-known correlated activity between contralateral primary motor cortex and the hand muscles, additional functional connections can be demonstrated.
We adopted coherence as a functional index and propose a so-called nulling beamformer method which is computationally efficient and addresses the localization of multiple correlated sources.
In simulations of cortico-motor coherence, the proposed method was able to correctly localize secondary sources.
The application of the approach on real electromyographic and magnetoencephalographic data collected during an isometric contraction and rest revealed an additional activity in the hemisphere ipsilateral to the hand involved in the task.
American Psychological Association (APA)
Micheli, Cristiano& Braun, Christoph. 2012. Enhancing the Signal of Corticomuscular Coherence. Computational and Mathematical Methods in Medicine،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-472669
Modern Language Association (MLA)
Micheli, Cristiano& Braun, Christoph. Enhancing the Signal of Corticomuscular Coherence. Computational and Mathematical Methods in Medicine No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-472669
American Medical Association (AMA)
Micheli, Cristiano& Braun, Christoph. Enhancing the Signal of Corticomuscular Coherence. Computational and Mathematical Methods in Medicine. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-472669
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-472669