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논문 상세정보

촉각 자극과 두점식별 자극에 따른 뇌활성도 분석: fMRI 사례 연구

Comparison of Cortical Activation between Tactile Stimulation and Two-point Discrimination: An fMRI Case Study


Purpose: Sensory input is very important for proper performance of human. Two-point discrimination is the most widely used tactile sensory test. The purpose of this study was to find the changes in cortical activation patterns between tactile stimulation and two-point discrimination. Methods: Two healthy subjects participated in our study. fMRI scanning was done during 4 repeated blocks of tactile stimulation and two point discrimination of the right index finger tip. In one block, stimuli were repeated 10 times every three seconds. To determine the changes of cortical neurons during sensory input, intensity index was analyzed. Results: When tactile stimulation of the right index finger tip was completed, only contralateral primary somatosensory area was activated. In contrast, during two-point discrimination, both the primary somatosensory area and ipsilateral supplementary sensory area were activated. Conclusion: During two point discrimination, both primary somatosensory area and ipsilateral supplementary sensory area were activated. Therefore, two-point discrimination is required more complex and conscious activity than tactile stimulation.

참고문헌 (19)

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이 논문을 인용한 문헌 (2)

  1. Park, Min-Chull ; Bae, Sung-Soo ; Lee, Mi-Young 2011. "Change of activation of the supplementary motor area in motor learning: an fMRI case study" 대한물리치료학회지 = The journal of Korean Society of Physical Therapy, 23(2): 85~90 
  2. Kim, Mi-Ju ; Lee, Ho-Cheol ; Park, Ji-Won 2012. "The Effect of Additional Haptic Supplementation on Postural Control During Squat in Normal Adult" 대한물리치료학회지 = The journal of Korean Society of Physical Therapy, 24(2): 134~142 


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