선택한 단어 수는 입니다.
최소 단어 이상 선택하여야 합니다.
최소 단어 이상 선택하여야 합니다.
선택한 단어 수는 30입니다.
최대 10 단어까지만 선택 가능합니다.
최대 10 단어까지만 선택 가능합니다.
문제 정의
- Nevertheless, although there has been much research thus far that observed the activation of MNS by using EEG, the research on how the activation of MNS is changed during training is insufficient. Thus, this study was conducted to determine if training that involves the observation of motions and repeated physical training affects the activation of the MNS.
제안 방법
- 0 for Windows, a statistical software package, was used for all analyses. Descriptive analysis was used to examine the EEG-based brain map.
- In order to evaluate the change of the cortex electricity activation of the brain known as the mirror neuron system, the event-related spectral perturbation (ERSP) that enables the measurement of average changes of the spectrum power was used. ERSP analysis was performed by EEGLAB.
- In order to find the difference of μ power log-ratios while motions were observed before and after the training of the subjects, the mean values of the absolute power log-ratio were produced and compared (Table 2).
- The function of the upper limbs of stroke patients is one of the most basic elements in the performance of the activities of daily living, and achieving functional upper limb functions is an important aim in rehabilitation. In this study, the action observation physical training (AOT) was applied to chronic stroke patients 6 times to produce the effect on the activation of MNS by the brain mapping system based on EEG. As a result, although there was no change of μ rhythm between times, MNS showed selective activation after AOT.
- The μ frequency band (8-12 Hz) related to the movement of the limbs was used to show a brain map. The brain map was represented by evaluating the spatial changes in the areas where electrodes were attached while the motions were observed before and after training.
- The general characteristics of the subjects were obtained using descriptive statistics. In order to check the change of μ rhythm before and after the training of the subjects, the paired t-test was performed.
- The video provided to the action observation training group showed the motion that moves a woodblock. The video used for training was produced with the motion that moves a wood block with the right hand and the motion that moves a wood block with the left hand. The time of the motion was 30 seconds for the right hand and 30 seconds for the left hand.
- In addition, the non-activation of the right inferior parietal cortex was also shown after the training. This is considered to indicate that the activation of the right inferior parietal cortex tends to decrease while, by repetitively observing and conducting the same motion, the training is performed in the same way as that in which the training of the result of the prior research was performed.
- This study used the μ rhythm obtained from C3 and C4, which correspond to the areas of the sensorymotor cortex, for analysis.
대상 데이터
- A total of 10 subjects participated in the training, and their general characteristics are as shown (Table 1).
- In order to check EEG changes before and after the training, the EEGs were measured while the motions were observed. As one of the subjects slept to not concentrate while the video was observed, only the materials of 10 subjects were collected. Participants were asked about observed action.
- The chronic stroke patient subjects who participated in the training were 11 selected hemiplegia patients who were diagnosed with stroke and had been treated in a rehabilitation hospital. During the training, the EEGs of 10 patients were analyzed, after 1 patient who failed to concentrate was excluded. All subjects listened to the research purpose and training procedure and voluntarily signed on the consent forms before measurement.
- 5-50 Hz, and 12-bit AD conversion. The EEG materials were collected by 32 electrodes that were attached to the head. The electrodes were attached according to the extended 10-20 method of electrode placement, and the reference electrodes with a diameter of 45 mm were attached to the backsides of both ears.
- The chronic stroke patient subjects who participated in the training were 11 selected hemiplegia patients who were diagnosed with stroke and had been treated in a rehabilitation hospital. During the training, the EEGs of 10 patients were analyzed, after 1 patient who failed to concentrate was excluded.
- The subjects were selected from the group of patients who had been diagnosed with stroke more than six months earlier, who had no other neurological lesions before the occurrence of stroke, who had an MMSE-K score higher than 24 points, who had no cognitive-perceptual disorders and could follow instructions, who had no visual or hearing problems and no aphasia, who could hold a block of 5×5 cm with a paralyzed hand, and who had been receiving physical therapy and occupational therapy for the past three months.
데이터처리
- In order to check the change of μ rhythm before and after the training of the subjects, the paired t-test was performed.
성능/효과
- The results of this study may prove the positive effects that decrease the unnecessary cognitive action of task performance during AOT and activate the MNS of the needed areas. However, the influence of AOT in patients with more severe motor impairment has not been investigated.
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