Source Detection and Functional Connectivity of the Sensorimotor Cortex during Actual and Imaginary Limb Movement: A Preliminary Study on the Implementation of eConnectome in Motor Imagery Protocols
Introduction. Sensorimotor cortex is activated similarly during motor execution and motor imagery. The study of functional connectivity networks (FCNs) aims at successfully modeling the dynamics of information flow between cortical areas. Materials and Methods. Seven healthy subjects performed 4 mot...
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Wiley
2012-01-01
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| Series: | Advances in Human-Computer Interaction |
| Online Access: | http://dx.doi.org/10.1155/2012/127627 |
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| author | Alkinoos Athanasiou Chrysa Lithari Konstantina Kalogianni Manousos A. Klados Panagiotis D. Bamidis |
| author_facet | Alkinoos Athanasiou Chrysa Lithari Konstantina Kalogianni Manousos A. Klados Panagiotis D. Bamidis |
| author_sort | Alkinoos Athanasiou |
| collection | DOAJ |
| description | Introduction. Sensorimotor cortex is activated similarly during motor execution and motor imagery. The study of functional connectivity networks (FCNs) aims at successfully modeling the dynamics of information flow between cortical areas. Materials and Methods. Seven healthy subjects performed 4 motor tasks (real foot, imaginary foot, real hand, and imaginary hand movements), while electroencephalography was recorded over the sensorimotor cortex. Event-Related Desynchronization/Synchronization (ERD/ERS) of the mu-rhythm was used to evaluate MI performance. Source detection and FCNs were studied with eConnectome. Results and Discussion. Four subjects produced similar ERD/ERS patterns between motor execution and imagery during both hand and foot tasks, 2 subjects only during hand tasks, and 1 subject only during foot tasks. All subjects showed the expected brain activation in well-performed MI tasks, facilitating cortical source estimation. Preliminary functional connectivity analysis shows formation of networks on the sensorimotor cortex during motor imagery and execution. Conclusions. Cortex activation maps depict sensorimotor cortex activation, while similar functional connectivity networks are formed in the sensorimotor cortex both during actual and imaginary movements. eConnectome is demonstrated as an effective tool for the study of cortex activation and FCN. The implementation of FCN in motor imagery could induce promising advancements in Brain Computer Interfaces. |
| format | Article |
| id | doaj-art-afd899300404411386e6dfdfc7c0d67f |
| institution | OA Journals |
| issn | 1687-5893 1687-5907 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Human-Computer Interaction |
| spelling | doaj-art-afd899300404411386e6dfdfc7c0d67f2025-08-20T02:19:06ZengWileyAdvances in Human-Computer Interaction1687-58931687-59072012-01-01201210.1155/2012/127627127627Source Detection and Functional Connectivity of the Sensorimotor Cortex during Actual and Imaginary Limb Movement: A Preliminary Study on the Implementation of eConnectome in Motor Imagery ProtocolsAlkinoos Athanasiou0Chrysa Lithari1Konstantina Kalogianni2Manousos A. Klados3Panagiotis D. Bamidis4Lab of Medical Informatics, Medical School, Aristotle University of Thessaloniki (AUTH), 54124 Thessaloniki, GreeceLab of Medical Informatics, Medical School, Aristotle University of Thessaloniki (AUTH), 54124 Thessaloniki, GreeceLab of Medical Informatics, Medical School, Aristotle University of Thessaloniki (AUTH), 54124 Thessaloniki, GreeceLab of Medical Informatics, Medical School, Aristotle University of Thessaloniki (AUTH), 54124 Thessaloniki, GreeceLab of Medical Informatics, Medical School, Aristotle University of Thessaloniki (AUTH), 54124 Thessaloniki, GreeceIntroduction. Sensorimotor cortex is activated similarly during motor execution and motor imagery. The study of functional connectivity networks (FCNs) aims at successfully modeling the dynamics of information flow between cortical areas. Materials and Methods. Seven healthy subjects performed 4 motor tasks (real foot, imaginary foot, real hand, and imaginary hand movements), while electroencephalography was recorded over the sensorimotor cortex. Event-Related Desynchronization/Synchronization (ERD/ERS) of the mu-rhythm was used to evaluate MI performance. Source detection and FCNs were studied with eConnectome. Results and Discussion. Four subjects produced similar ERD/ERS patterns between motor execution and imagery during both hand and foot tasks, 2 subjects only during hand tasks, and 1 subject only during foot tasks. All subjects showed the expected brain activation in well-performed MI tasks, facilitating cortical source estimation. Preliminary functional connectivity analysis shows formation of networks on the sensorimotor cortex during motor imagery and execution. Conclusions. Cortex activation maps depict sensorimotor cortex activation, while similar functional connectivity networks are formed in the sensorimotor cortex both during actual and imaginary movements. eConnectome is demonstrated as an effective tool for the study of cortex activation and FCN. The implementation of FCN in motor imagery could induce promising advancements in Brain Computer Interfaces.http://dx.doi.org/10.1155/2012/127627 |
| spellingShingle | Alkinoos Athanasiou Chrysa Lithari Konstantina Kalogianni Manousos A. Klados Panagiotis D. Bamidis Source Detection and Functional Connectivity of the Sensorimotor Cortex during Actual and Imaginary Limb Movement: A Preliminary Study on the Implementation of eConnectome in Motor Imagery Protocols Advances in Human-Computer Interaction |
| title | Source Detection and Functional Connectivity of the Sensorimotor Cortex during Actual and Imaginary Limb Movement: A Preliminary Study on the Implementation of eConnectome in Motor Imagery Protocols |
| title_full | Source Detection and Functional Connectivity of the Sensorimotor Cortex during Actual and Imaginary Limb Movement: A Preliminary Study on the Implementation of eConnectome in Motor Imagery Protocols |
| title_fullStr | Source Detection and Functional Connectivity of the Sensorimotor Cortex during Actual and Imaginary Limb Movement: A Preliminary Study on the Implementation of eConnectome in Motor Imagery Protocols |
| title_full_unstemmed | Source Detection and Functional Connectivity of the Sensorimotor Cortex during Actual and Imaginary Limb Movement: A Preliminary Study on the Implementation of eConnectome in Motor Imagery Protocols |
| title_short | Source Detection and Functional Connectivity of the Sensorimotor Cortex during Actual and Imaginary Limb Movement: A Preliminary Study on the Implementation of eConnectome in Motor Imagery Protocols |
| title_sort | source detection and functional connectivity of the sensorimotor cortex during actual and imaginary limb movement a preliminary study on the implementation of econnectome in motor imagery protocols |
| url | http://dx.doi.org/10.1155/2012/127627 |
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