Neurofeedback induced restoration on sensorimotor rhythm after 24h of hand immobilization. [Reserch paper]

Joanna Jarmolowska1, Marco Colussi2, Aleksandar Miladinović3, Uroš Marušič1, Piero Paolo Battaglini2
1. Science and Research Centre, Koper, Slovenia
2. Department of Life Sciences, University of Trieste, Italy
3. Department of Engineering and Architecture, University of Trieste Italy

Abstract. In this study, we examined the effect of neurofeedback on EEG changes due to immobilization of the dominant hand. Desynchronization of the sensorimotor rhythms during motor imagery was used as a tool to investigate brain activity. The study is based on 8 healthy subjects who underwent immobilization of the dominant hand for 24 hours. The electrical activity of the sensorimotor region of the cerebral cortex was registered during mental imagery of hand movements before the immobilization, soon after its removal and after a single session of neurofeedback. The control of the feedback stimuli was based on changes in sensorimotor rhythms produced by imagination of movement. Preliminary results show that immobilization caused changes in alpha and beta rhythms that were rapidly reversed after a single session of neurofeedback. At the end of the full study, if the here presented observations will still hold, the neurofeedback protocol will be proposed for routine rehabilitation sessions in patients suffering partial or total limb disability.

Keywords: neurofeedbak, motor imagery, hand immobilization, brain-computing interfaces

 

figure1
Figure 1: ERSPs induced by motor imagery of right hand movement before hand immobilization (left), after 24h of its immobilization (centre) and following a single session of neurofeedback (right). Grand means of responses (8 subjects) for contralateral hemisphere in the 3 most reactive electrodes (Fc3, C3 and Cp3, located to the left of the midline, at frontal, central and parietal locations) are shown. In each plot, the vertical axis is EEG frequency; the horizontal axis is time relative to cue onset (at time 0); the colour bar is EEG amplitude ratio plotted in (10log10) dB.

 

Acknowledgments: The present study is financed by the program Interreg V-A Italia-Slovenia 2014-2020 MEMORI-net.

Published in: Sobodni Pogledi na Mozgansko Kap 2018 [New insight into Stroke]

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Cite this paper as: Jarmolowska J, Colussi M., MIladinovic A, Marusic U, Battaglini PP. Neurofeedback induced restoration on sensorimotor rhythm after 24h of hand immobilization. Sodobni Pogledi Na Mozgansko Kap [New insight into Stroke], M. Menih, J. Magdic, M. Racusa (Eds), UKC, Maribor, 2018; pp 159-164. ISBN 978-961-7039-13-9.