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Journal of Medical Systems

, Volume 34, Issue 2, pp 131–138 | Cite as

Time Frequency Based Coherence Analysis Between EEG and EMG Activities in Fatigue Duration

  • D. Tuncel
  • A. Dizibuyuk
  • M. K. Kiymik
Original Paper

Abstract

In voluntary movements, functional role of synchronized neuronal activity in the human motor system is important to detect and diagnose of the some diseases. In some previous studies, EEG signals and responses belong to an exercise are examined and an increased EEG activity reported in alpha frequency band. The reason of this is not clear whether a change is a direct result of the exhaustion or whether it is an adaptation. Time frequency based coherence analysis may be excellent tools to asses the fatigue stages. The experiment was planned with three fatigue stage and the cortical–muscular synchronizations were observed and examined. Simultaneously cortical electroencephalography (EEG) activities and electromyography (EMG) activities that are activated by phasic voluntary movements are recorded for 10 healthy young person and relation of the coherence between the signals are observed in time frequency domain. There is a decreasing significant coherence activity in third fatigue stage against to first and second fatigue stages. Time frequency based coherence analysis is a good method to explore motor cortex control of muscle activity in the fatigued persons. Time frequency based coherence analysis gives useful result for recordings of simultaneously cortical activity EEG and EMG during a phasic voluntary movement to determination of fatigue levels.

Keywords

EEG EMG Coherence analysis Fatigue 

Notes

Acknowledgement

This study was supported by grant from The Scientific and Technological Research Council of Turkey with project number 105E039.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Faculty of Medicine Neurology DepartmentKahramanmaras Sutcu Imam UniversityKahramanmarasTurkey
  2. 2.Electrical and Electronics EngineeringKahramanmaras Sutcu Imam UniversityKahramanmarasTurkey

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