Event-related Desynchronization of Mu Rhythms During Concentric and Eccentric Contractions

Joo Hee Park, Heon Seock Cynn, Kwang Su Cha, Kyung Hwan Kim, Hye Seon Jeon

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The purpose of this study was to compare the electroencephalographic (EEG) patterns and reaction times (RTs) of muscle activation between concentric and eccentric biceps brachii contractions under the RT paradigm and to evaluate how the EEG patterns and RTs changed with practice. Sixteen subjects performed 3 sets of 30 repetitions of submaximal voluntary concentric and eccentric biceps contractions. RT, event-related desynchronization (ERD) patterns of mu rhythm onset, and ERD amplitudes were selectively analyzed. Mental demand decreased as familiarity with the motor action increased due to practice regardless of contraction type. However, the 2 types of muscle contractions still have differences in brain activity regardless of decreased mental demand: eccentric contractions require earlier preparation than concentric contractions.

Original languageEnglish
Pages (from-to)457-466
Number of pages10
JournalJournal of Motor Behavior
Issue number4
Publication statusPublished - 2018 Jul 4

Bibliographical note

Funding Information:
The authors would like to acknowledge financial and administrative support from the “Brain Korea 21 PLUS Project (Grant NO. 2016-51-0009)” sponsored by the Korean Research Foundation for the Department of Physical Therapy Graduate School, Yonsei University.

Publisher Copyright:
© 2017, Copyright © Taylor & Francis Group, LLC.

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Orthopedics and Sports Medicine
  • Experimental and Cognitive Psychology
  • Cognitive Neuroscience


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