The Journal of Korean Physical Therapy

The Korean Society of Physical Therapy (대한물리치료학회)
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Changes of Cortical Activation Pattern Induced by Motor Learning with Serial Reaction Time Task

시열반응과제의 운동학습이 대뇌피질 활성화의 변화에 미치는 영향

  • Kwon, Yong-Hyun (Department of Physical Therapy, Yeungnam College of Science & Technology) ;
  • Chang, Jong-Sung (Department of Rehabilitation Science, Graduate School, Daegu University) ;
  • Kim, Chung-Sun (Department of Physical Therapy, College of Rehabilitation Science, Daegu University)
  • 권용현 (영남이공대학 물리치료학과) ;
  • 장종성 (대구대학교 대학원 재활과학과) ;
  • 김중선 (대구대학교 재활과학대학 물리치료학과)
  • Published : 2009.03.25
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Abstract

Purpose: Numerous investigators demonstrated that adaptative changes were induced by motor skill acquisition in the central nervous system. We investigated the changes of neuroelectric potential following motor learning with serial reaction time task in young healthy subjects, using electroencephalography (EEG). Methods: Twelve right-handed normal volunteers were recruited, who have no history of neurological dysfunction and were given to written the informed consent. All subjects were assigned to flex to extend the wrist joint or flex the thumb for pressing the matched button as quickly and accurately as possible, when one of five colored lights was displayed on computer screen (red, yellow, green, blue, white). EEG was measured, whenfive types simulations ware presented randomly with equal probabilities of 20% in total 200 times at the pre and post test. And they were scheduled for 30 minutes practice session during two consecutive days in the laboratory. Results: The results showed that the reaction time at the post test was significantly reduced, compared to one of the pre test in serial reaction time task. In EEG map analysis, the broaden bilateral activation tended to be changed to the focused contralateral activation in the frontoparietal area. Conclusion: These findings showed that acquisition of motor skill led to product more fast motor execution, and that motor learning could change cortical activation pattern, from the broaden bilateral activation to the focused contralateral activation. Thus we concluded that the adaptative change was induced by motor learning in healthy subjects.

Keywords

References

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