Amplitude and latency of EEG Beta activity during real movements, discrete and continuous motor imageries

Sébastien Rimbert 1 Laurent Bougrain 1 Cecilia Lindig-León 1 Guillaume Serrière 1 Francesco Giovannini 1 Axel Hutt 1
1 NEUROSYS - Analysis and modeling of neural systems by a system neuroscience approach
Inria Nancy - Grand Est, LORIA - AIS - Department of Complex Systems, Artificial Intelligence & Robotics
Abstract : Motor imagery (MI) modifies the neural activity within the primary sensorimotor areas of the cortex in a similar way to a real movement. More precisely, beta oscillations (18-­‐25 Hz), which are often considered as a sensorimotor rhythm , show that the amplitude of brain oscillations is modulated before , during and after a MI. In most MI-based BCI experimental paradigm, subjects realize continuous MI, i.e a prolonged intention of movement, during a time window of a few seconds with the objective to increase the detection of ERD and ERS. However, when the subjects imagine a succession of movements, several ERD and ERS are generated, with lower amplitudes than those elicited by a single MI. Here, we employ a simple short MI to detect the ERD and the ERS.
Type de document :
Poster
Bernstein Conference 2015, Sep 2015, Bernstein, Germany
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Contributeur : Sébastien Rimbert <>
Soumis le : vendredi 20 novembre 2015 - 11:16:06
Dernière modification le : jeudi 5 octobre 2017 - 09:40:01
Document(s) archivé(s) le : vendredi 28 avril 2017 - 15:55:57

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Sébastien Rimbert, Laurent Bougrain, Cecilia Lindig-León, Guillaume Serrière, Francesco Giovannini, et al.. Amplitude and latency of EEG Beta activity during real movements, discrete and continuous motor imageries. Bernstein Conference 2015, Sep 2015, Bernstein, Germany. 〈hal-01231404〉

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