TY - JOUR ID - 44615 TI - Does Muscle Fatigue Alter EEG Bands of Brain Hemispheres? JO - Journal of Biomedical Physics and Engineering JA - JBPE LA - en SN - AU - Taghizadeh, Sh AU - Pirouzi, S AU - Zamani, A AU - Motealleh, A AU - Bagheri, Z AD - PhD, Department of Physiotherapy, School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Shiraz, Iran AD - PhD, Department of Medical Physics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran AD - PhD, Department of Biostatistics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran Y1 - 2020 PY - 2020 VL - 10 IS - 2 SP - 187 EP - 196 KW - Electroencephalography (EEG) KW - Maximal Voluntary Contraction (MVC) KW - Alpha Band KW - Beta Band KW - Gamma Band KW - Muscle fatigue KW - Muscle Contraction DO - 10.31661/jbpe.v0i0.621 N2 - Background: Muscle fatigue has been known to influence brain activity, but very little is known about how cortical centers respond to muscle fatigue.Objective: This study was conducted to investigate the effects of muscle contraction and fatigue induced by two different percents of maximal voluntary contraction (MVC) on Electroencephalography (EEG) signals.Material and Methods: In this quasi-experimental study, EEG signals were recorded from twenty-one healthy human subjects during three phases (rest, pre fatigue and post fatigue) contraction of Adductor pollicis muscle (APM) at 30% and 70% MVC. The mean powers of EEG bands (alpha, beta and gamma) were computed offline in the frequency domain.Results: None of the three phases with each percent of MVC revealed significant differences for all bands (p>0.05). Comparison of two hemispheres showed that right hemisphere gamma band activity was enhanced during pre-fatigue state at 30% MVC (p= 0.042) and post-fatigue state at 70% MVC (p= 0.028). Right hemisphere beta band activity also increased prominently at 70% MVC in post-fatigue condition (p = 0.030).Conclusion: These results suggest muscle contraction and fatigue at 30% and 70% MVC have no significant effect on EEG activity, but the trends of beta and gamma band activities are almost similar in each percent of 30% and 70% MVC. Right brain hemisphere shows more activity than left hemisphere in beta and gamma rhythm after fatigue state at 70% MVC. UR - https://jbpe.sums.ac.ir/article_44615.html L1 - https://jbpe.sums.ac.ir/article_44615_d0524274bc426ce55a5a72b445f2853c.pdf ER -