Cortical sources of electroencephalographic alpha rhythms related to the anticipation and experience of mirror visual feedback-induced illusion of finger movements.

Autor: Rizzo M; Department of Health Science and Technology, The Faculty of Medicine, Center for Neuroplasticity and Pain (CNAP), SMI®, Aalborg University, Aalborg, Denmark., Del Percio C; Department of Physiology and Pharmacology 'V. Erspamer', Sapienza University of Rome, Rome, Italy., Petrini L; Department of Health Science and Technology, The Faculty of Medicine, Center for Neuroplasticity and Pain (CNAP), SMI®, Aalborg University, Aalborg, Denmark., Lopez S; Department of Physiology and Pharmacology 'V. Erspamer', Sapienza University of Rome, Rome, Italy., Arendt-Nielsen L; Department of Health Science and Technology, The Faculty of Medicine, Center for Neuroplasticity and Pain (CNAP), SMI®, Aalborg University, Aalborg, Denmark.; Department of Medical Gastroenterology, Mech-Sense, Aalborg University Hospital, Aalborg, Denmark., Babiloni C; Department of Physiology and Pharmacology 'V. Erspamer', Sapienza University of Rome, Rome, Italy.; Hospital San Raffaele Cassino, Cassino, Italy.
Jazyk: angličtina
Zdroj: Psychophysiology [Psychophysiology] 2023 Jun; Vol. 60 (6), pp. e14281. Date of Electronic Publication: 2023 Feb 28.
DOI: 10.1111/psyp.14281
Abstrakt: Mirror visual feedback (MVF) technique consists in placing a mirror in a person's body midline to induce the illusion of bilateral synchronous movements of the limbs during actual unilateral movements. A recent electroencephalographical (EEG) study demonstrated that MVF-induced illusion was related to the event-related desynchronization (ERD) of alpha (8-12 Hz) rhythms (cortical activation) at the central and parietal scalp electrodes ipsilateral to the unilateral right finger movements. In the present study, we re-analyzed those data to localize the cortical sources of alpha ERD during the anticipation and experience of the MVF-induced illusion of index finger movements. To this aim, the exact Low-Resolution Brain Electromagnetic Tomography freeware was used for the estimation of the cortical sources of the alpha ERD. Results showed that as compared to the condition without MVF, the MVF condition was characterized by greater (p < .01, uncorrected) alpha ERD sources in right frontopolar areas during the anticipation of the MVF-induced illusion of left movements. The MVF condition was also characterized by greater (p < .05, corrected) alpha ERD sources in right premotor, primary somatomotor, and posterior inferior parietal areas during both the anticipation and experience of that MVF-induced illusion. These findings suggest that the MVF-induced illusory experience of left finger movements may be due to dynamic changes in alpha ERD in associative, premotor, somatomotor, and visuomotor frontal-parietal areas located in the hemisphere contralateral to the mirrored motor acts.
(© 2023 The Authors. Psychophysiology published by Wiley Periodicals LLC on behalf of Society for Psychophysiological Research.)
Databáze: MEDLINE
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