Journal of the Korean Society of Physical Medicine (대한물리의학회지)

The Korean Society of Physical Medicine (대한물리의학회)
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The effects of action observation and motor imagery of serial reaction time task(SRTT) in mirror neuron activation

연속 반응 시간 과제 수행의 행위 관찰과 운동 상상이 거울신경활성에 미치는 영향

  • Lee, Sang-Yeol (Department of Physical Therapy, Gimhae college university) ;
  • Lee, Myung-Hee (Department of Physical Therapy, Daegu Health College) ;
  • Bae, Sung-Soo (Department of Physical Therapy, Daegu University) ;
  • Lee, Kang-Seong (Department of prosthetics and orthotics, Hanseo University) ;
  • Gong, Won-Tae (Department of Physical Therapy, Gumi college university)
  • 이상열 (김해대학 물리치료과) ;
  • 이명희 (대구보건대학 물리치료과) ;
  • 배성수 (대구대학교 물리치료학과) ;
  • 이강성 (한서대학교 의료보장구학과) ;
  • 공원태 (구미1대학 물리치료과)
  • Received : 2010.06.08
  • Accepted : 2010.07.27
  • Published : 2010.08.31
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Abstract

Purpose : The object of this study was to examine the effect of motor learning on brain activation depending on the method of motor learning. Methods : The brain activation was measured in 9 men by fMRI. The subjects were divided into the following groups depending on the method of motor learning: actually practice (AP, n=3) group, action observation (AO, n=3) group and motor imagery (MI, n=3) group. In order to examine the effect of motor learning depending on the method of motor learning, the brain activation data were measured during learning. For the investigation of brain activation, fMRI was conducted. Results : The results of brain activation measured before and during learning were as follows; (1) During learning, the AP group showed the activation in the following areas: primary motor area located in precentral gyrus, somatosensory area located in postcentral gyrus, supplemental motor area and prefrontal association area located in precentral gyrus, middle frontal gyrus and superior frontal gyrus, speech area located in superior temporal gyrus and middle temporal gyrus, Broca's area located in inferior parietal lobe and somatosensory association area of precuneus; (2) During learning, the AD groups showed the activation in the following areas: primary motor area located in precentral gyrus, prefrontal association area located in middle frontal gyrus and superior frontal gyrus, speech area and supplemental motor area located in superior temporal gyrus and middle temporal gyrus, Broca's area located in inferior parietal lobe, somatosensory area and primary motor area located in precentral gyrus of right cerebrum and left cerebrum, and somatosensory association area located in precuneus; and (3) During learning, the MI group showed activation in the following areas: speech area located in superior temporal gyrus, supplemental area, and somatosensory association area located in precuneus. Conclusion : Given the results above, in this study, the action observation was suggested as an alternative to motor learning through actual practice in serial reaction time task of motor learning. It showed the similar results to the actual practice in brain activation which were obtained using activation of mirror neuron. This result suggests that the brain activation occurred by the activation of mirror neuron, which was observed during action observation. The mirror neurons are located in primary motor area, somatosensory area, premotor area, supplemental motor area and somatosensory association area. In sum, when we plan a training program through physiotherapy to increase the effect during reeducation of movement, the action observation as well as best resting is necessary in increasing the effect of motor learning with the patients who cannot be engaged in actual practice.

Keywords

References

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