A Multivariate Auto-Regressive Method to Estimate Cortico-Muscular Coherence for the Detection of Movement Intent
In this work a time-frequency approach to estimate the Cortico-Muscular Coherence for the detection of the movement intent is presented, assessed on simulated data, and evaluated experimentally during different motor tasks performed by healthy subjects and patients suffering from different types of...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Applied Bionics and Biomechanics |
| Online Access: | http://dx.doi.org/10.3233/ABB-2011-0036 |
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| author | G. Severini S. Conforto M. Schmid T. D'Alessio |
| author_facet | G. Severini S. Conforto M. Schmid T. D'Alessio |
| author_sort | G. Severini |
| collection | DOAJ |
| description | In this work a time-frequency approach to estimate the Cortico-Muscular Coherence for the detection of the movement intent is presented, assessed on simulated data, and evaluated experimentally during different motor tasks performed by healthy subjects and patients suffering from different types of tremor. Cortico-Muscular Coherence is an index of the coupling of EEG signal in the cortical area with sEMG activity in the frequency domain, and its contributions in the beta band (15–30 Hz) have been associated to the movement intent. Cortico-Muscular Coherence estimation is here achieved by considering a closed-loop representation of the signals under analysis obtained through Multivariate Auto Regressive modeling. Significance levels for Cortico-Muscular Coherence are assessed by means of a surrogate data analysis approach. The detection technique is able to reveal significant Cortico-Muscular Coherence changes in 79% of the experimental trials, with a mean anticipation of 1.35 s with respect to movement onset. Time-frequency estimation of Cortico-Muscular Coherence can provide an insight for the development of a multimodal BCI able to integrate information from the brain activity in the functioning of assistive devices. |
| format | Article |
| id | doaj-art-51a6cb88792c43e583d288eebaf41431 |
| institution | Kabale University |
| issn | 1176-2322 1754-2103 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Applied Bionics and Biomechanics |
| spelling | doaj-art-51a6cb88792c43e583d288eebaf414312025-02-03T05:45:31ZengWileyApplied Bionics and Biomechanics1176-23221754-21032012-01-019213514310.3233/ABB-2011-0036A Multivariate Auto-Regressive Method to Estimate Cortico-Muscular Coherence for the Detection of Movement IntentG. Severini0S. Conforto1M. Schmid2T. D'Alessio3Department of Applied Electronics, Roma TRE University, Rome, ItalyDepartment of Applied Electronics, Roma TRE University, Rome, ItalyDepartment of Applied Electronics, Roma TRE University, Rome, ItalyDepartment of Applied Electronics, Roma TRE University, Rome, ItalyIn this work a time-frequency approach to estimate the Cortico-Muscular Coherence for the detection of the movement intent is presented, assessed on simulated data, and evaluated experimentally during different motor tasks performed by healthy subjects and patients suffering from different types of tremor. Cortico-Muscular Coherence is an index of the coupling of EEG signal in the cortical area with sEMG activity in the frequency domain, and its contributions in the beta band (15–30 Hz) have been associated to the movement intent. Cortico-Muscular Coherence estimation is here achieved by considering a closed-loop representation of the signals under analysis obtained through Multivariate Auto Regressive modeling. Significance levels for Cortico-Muscular Coherence are assessed by means of a surrogate data analysis approach. The detection technique is able to reveal significant Cortico-Muscular Coherence changes in 79% of the experimental trials, with a mean anticipation of 1.35 s with respect to movement onset. Time-frequency estimation of Cortico-Muscular Coherence can provide an insight for the development of a multimodal BCI able to integrate information from the brain activity in the functioning of assistive devices.http://dx.doi.org/10.3233/ABB-2011-0036 |
| spellingShingle | G. Severini S. Conforto M. Schmid T. D'Alessio A Multivariate Auto-Regressive Method to Estimate Cortico-Muscular Coherence for the Detection of Movement Intent Applied Bionics and Biomechanics |
| title | A Multivariate Auto-Regressive Method to Estimate Cortico-Muscular Coherence for the Detection of Movement Intent |
| title_full | A Multivariate Auto-Regressive Method to Estimate Cortico-Muscular Coherence for the Detection of Movement Intent |
| title_fullStr | A Multivariate Auto-Regressive Method to Estimate Cortico-Muscular Coherence for the Detection of Movement Intent |
| title_full_unstemmed | A Multivariate Auto-Regressive Method to Estimate Cortico-Muscular Coherence for the Detection of Movement Intent |
| title_short | A Multivariate Auto-Regressive Method to Estimate Cortico-Muscular Coherence for the Detection of Movement Intent |
| title_sort | multivariate auto regressive method to estimate cortico muscular coherence for the detection of movement intent |
| url | http://dx.doi.org/10.3233/ABB-2011-0036 |
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