Quantify Brainwave Mu(µ) Rhythm and Beta(β) Rhythm on Motoric Area during Repetitive Flexy and Extension movement on the Right Arm.
Suprijanto (b), Muhammad Aslam F(a). Lulu L. Fitri(a), Ayu Gareta R(b)
a). School of Life Sciences and Technology, Institut Teknologi Bandung (ITB)
Jalan Ganesha No. 10 Bandung 40132 Indonesia
b). Faculty of Industrial Technology, Institut Teknologi Bandung (ITB)
Jalan Ganesha No. 10 Bandung 40132 Indonesia
e-mail: lfitri[at]sith.itb.ac.id, supri[at]tf.itb.ac.id
Abstract
The repetitive movements such as repetitive flexy and extension muscle activities is one of approach for recovering and improving a brain activity in the coordination aspect of motoric, attention and cognitive process. Repetitive movements exercise for a long-time simulation workload is well known to improve all three aspects. Therefore, a short duration repetitive movement study was carried out without the burden of brain activity. This study aims to determine the effect of right arm extension-flexion-repetitive movements on the spectral activity of power and the tendency of brain waves µ and β frequency in motor areas in both hemispheres. EEG signal measurements are performed at the motor centres of the brain in the C3 (left hemisphere) and C4 (right hemisphere) canals of 3 narcotics who performed the flexion-extension flexion right arm repetitive movements in 3 training sessions each for 4 minutes. Brain wave activity data are processed into power spectral averages and wave frequencies µ (8-13 Hz) and β waves (14-30 Hz). Based on the analysis of the power spectral mean there was a decrease in the spectral power of the µ and β waves in the C3 and C4 channels for three training sessions. A decrease in wave power µ indicates an increasingly active neuron condition; conversely, a decrease in β wave power indicates a decrease in attention level. Statistically, during the 3 training sessions there was a marked difference in the decrease in the spectral mean power of the µ wave in the C3 channel and the β wave in the C3 and C4 channels (p <0.05), as well as a noticeable difference in the spectral mean power of the µ and β waves between the hemispheres (p <0.05). The average wave frequencies µ and β are at low frequencies and have decreased between movement sessions. During the three training sessions, there was a significant difference in the decrease in mean µ wave frequency in C4 channel and β wave in both channels (p <0.05), as well as a noticeable difference in mean wave frequency µ between hemispheres (p <0.05). From this study, we found that during repetitive flexion-extension of the right arm, the power spectral and low-frequency mu wave in the motor areas in both hemispheres tend to decrease. This result is related to the desynchronization of the neuron on the motoric area. On the other hand, decreasing the power spectral of the beta wave is during repetitive movement that represents decreased attention.
Keywords: Electroencephalography, repetitive movement, brainwave mu, brainwave beta, motoric area
Topic: Biomedical, Robotic and ICT engineering