Modulations of Cortical Power and Connectivity in Alpha and Beta Bands during the Preparation of Reaching Movements
Planning goal-directed movements towards different targets is at the basis of common daily activities (e.g., reaching), involving visual, visuomotor, and sensorimotor brain areas. Alpha (8–13 Hz) and beta (13–30 Hz) oscillations are modulated during movement preparation and are implicated in correct...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-03-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/7/3530 |
| _version_ | 1827746502310625280 |
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| author | Davide Borra Silvia Fantozzi Maria Cristina Bisi Elisa Magosso |
| author_facet | Davide Borra Silvia Fantozzi Maria Cristina Bisi Elisa Magosso |
| author_sort | Davide Borra |
| collection | DOAJ |
| description | Planning goal-directed movements towards different targets is at the basis of common daily activities (e.g., reaching), involving visual, visuomotor, and sensorimotor brain areas. Alpha (8–13 Hz) and beta (13–30 Hz) oscillations are modulated during movement preparation and are implicated in correct motor functioning. However, how brain regions activate and interact during reaching tasks and how brain rhythms are functionally involved in these interactions is still limitedly explored. Here, alpha and beta brain activity and connectivity during reaching preparation are investigated at EEG-source level, considering a network of task-related cortical areas. Sixty-channel EEG was recorded from 20 healthy participants during a delayed center-out reaching task and projected to the cortex to extract the activity of 8 cortical regions per hemisphere (2 occipital, 2 parietal, 3 peri-central, 1 frontal). Then, we analyzed event-related spectral perturbations and directed connectivity, computed via spectral Granger causality and summarized using graph theory centrality indices (in degree, out degree). Results suggest that alpha and beta oscillations are functionally involved in the preparation of reaching in different ways, with the former mediating the inhibition of the ipsilateral sensorimotor areas and disinhibition of visual areas, and the latter coordinating disinhibition of the contralateral sensorimotor and visuomotor areas. |
| first_indexed | 2024-03-11T05:25:14Z |
| format | Article |
| id | doaj.art-ddb75657abbf4ef296450b848396253d |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T05:25:14Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-ddb75657abbf4ef296450b848396253d2023-11-17T17:33:55ZengMDPI AGSensors1424-82202023-03-01237353010.3390/s23073530Modulations of Cortical Power and Connectivity in Alpha and Beta Bands during the Preparation of Reaching MovementsDavide Borra0Silvia Fantozzi1Maria Cristina Bisi2Elisa Magosso3Department of Electrical, Electronic and Information Engineering “Guglielmo Marconi” (DEI), University of Bologna, Cesena Campus, 47521 Cesena, ItalyDepartment of Electrical, Electronic and Information Engineering “Guglielmo Marconi” (DEI), University of Bologna, Cesena Campus, 47521 Cesena, ItalyDepartment of Electrical, Electronic and Information Engineering “Guglielmo Marconi” (DEI), University of Bologna, Cesena Campus, 47521 Cesena, ItalyDepartment of Electrical, Electronic and Information Engineering “Guglielmo Marconi” (DEI), University of Bologna, Cesena Campus, 47521 Cesena, ItalyPlanning goal-directed movements towards different targets is at the basis of common daily activities (e.g., reaching), involving visual, visuomotor, and sensorimotor brain areas. Alpha (8–13 Hz) and beta (13–30 Hz) oscillations are modulated during movement preparation and are implicated in correct motor functioning. However, how brain regions activate and interact during reaching tasks and how brain rhythms are functionally involved in these interactions is still limitedly explored. Here, alpha and beta brain activity and connectivity during reaching preparation are investigated at EEG-source level, considering a network of task-related cortical areas. Sixty-channel EEG was recorded from 20 healthy participants during a delayed center-out reaching task and projected to the cortex to extract the activity of 8 cortical regions per hemisphere (2 occipital, 2 parietal, 3 peri-central, 1 frontal). Then, we analyzed event-related spectral perturbations and directed connectivity, computed via spectral Granger causality and summarized using graph theory centrality indices (in degree, out degree). Results suggest that alpha and beta oscillations are functionally involved in the preparation of reaching in different ways, with the former mediating the inhibition of the ipsilateral sensorimotor areas and disinhibition of visual areas, and the latter coordinating disinhibition of the contralateral sensorimotor and visuomotor areas.https://www.mdpi.com/1424-8220/23/7/3530electroencephalographycenter-out reachingevent-related spectral perturbation (ERSP)event-related desynchronization (ERD)spectral Granger causalityin degree and out degree |
| spellingShingle | Davide Borra Silvia Fantozzi Maria Cristina Bisi Elisa Magosso Modulations of Cortical Power and Connectivity in Alpha and Beta Bands during the Preparation of Reaching Movements Sensors electroencephalography center-out reaching event-related spectral perturbation (ERSP) event-related desynchronization (ERD) spectral Granger causality in degree and out degree |
| title | Modulations of Cortical Power and Connectivity in Alpha and Beta Bands during the Preparation of Reaching Movements |
| title_full | Modulations of Cortical Power and Connectivity in Alpha and Beta Bands during the Preparation of Reaching Movements |
| title_fullStr | Modulations of Cortical Power and Connectivity in Alpha and Beta Bands during the Preparation of Reaching Movements |
| title_full_unstemmed | Modulations of Cortical Power and Connectivity in Alpha and Beta Bands during the Preparation of Reaching Movements |
| title_short | Modulations of Cortical Power and Connectivity in Alpha and Beta Bands during the Preparation of Reaching Movements |
| title_sort | modulations of cortical power and connectivity in alpha and beta bands during the preparation of reaching movements |
| topic | electroencephalography center-out reaching event-related spectral perturbation (ERSP) event-related desynchronization (ERD) spectral Granger causality in degree and out degree |
| url | https://www.mdpi.com/1424-8220/23/7/3530 |
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