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Poster Communications Year : 2015

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

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.
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Dates and versions

hal-01231404 , version 1 (20-11-2015)

Identifiers

  • HAL Id : hal-01231404 , version 1

Cite

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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