Effects of Non-Rhythmical Paroxysmal Stimulation on EEG-EMG Coherence during Still Standing in Humans

Abstract:

In many previous studies, neuronal oscillations in humans under 1530 Hz activity have been observed, correlated with rhythmical motor output. In this present study, we observed the influence of non-rhythmical paroxysmal stimulation on cortical neurons by analyzing the coherence between electroencephalogram (EEG) and electromyogram (EMG). The non-rhythmical stimulation was performed by using this method that the braced force of the subjects one foot was released suddenly when the subject was standing still. The surface EMG signals from the tibialis anterior and the gastrocnemius muscles of 10 healthy subjects were recorded, and the cortical activities of contralateral cortical sensorimotor areas were also recorded simultaneously by EEG during the experiment. The data indicates that the range (10-25Hz) synchronization represents a state of the cortico-muscular network when the balance is broken which the braced force of subjects one foot is released suddenly.

• Periodical: Advanced Materials Research (Volume 749)
• Pages: 418-422
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.749.418
• Online since: August 2013
• Authors: Jian Feng Sui, Cristopher Young, Lin Hong Ji
• Keywords: Coherence, Electroencephalography, Electromyogram, Non-Rhythmical Stimulation, Stroke

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