• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2012년도 추계학술대회 논문집
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• pp.911-912
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• 2012

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2013년도 춘계학술대회 논문집
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• pp.1417-1418
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• 2013

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2013년도 춘계학술대회 논문집
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• pp.1421-1422
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• 2013

• 한국정밀공학회지
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• 제29권7호
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• pp.705-710
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• 2012

Research involving discomfort or pain related to haptic vibratory stimulation the for prosthesis users of myoelectrical hand is very lacking. Our objective of this study was to evaluate the displeasure and sensitivity of areas in forearm using vibration stimulation system between upper limb amputees and non-amputees. Twenty transradial amputees and forty non-amputees (20 youth, 20 elderly) were involved. We set up custom-made vibration stimulation system including eight actuators (4 medial parts and 4 lateral parts) and GUI-based acquisition system, to investigate changes of residual somatosensory sensibility and displeasure at proximal 25% of forearm. Eight vibration actuators were attached to the circumference of proximal 25% point of forearm at regular intervals. Sensitivity tests were used to stimulate the 120Hz and discomfort experiment was used to 37 ~ 223Hz. The subjective responses were evaluated by 10 point scale. The results showed that both groups were similar in sensitive areas. Response at around of radius was most sensitive than other areas in all subjects. Elderly group do not appear discomfort of vibrotactile; however, youth group and amputee presented discomfort of vibrotactile. Prosthesis with a vibrotactile feedback system should be developed considering the sensitivity. Furthermore, Future studies should investigate the scope of application of that principle.

• 대한감각통합치료학회지
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• 제21권1호
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• pp.23-33
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• 2023

목적 : 본 연구의 목적은 경직성 편마비 뇌성마비 후기 아동의 위팔두갈래근에 진동자극을 적용한 훈련이 상지의 기능을 향상시키는데 도움이 되는지를 알아보는 것이다. 연구방법 : 본 연구는 13세에서 15세 사이의 경직성 편마비를 가진 뇌성마비 아동 3명을 대상으로 하였다. 개별대상자 실험연구 방법 중 다중 기초선 개별실험연구를 이용한 AB 연구 설계를 사용하였으며, 중재기간 동안 진동자극은 마비측 손에 제공되었다. 상지의 기능을 측정하기 위하여 사용된 평가는 라파엘 스마트 보드는 매 회기 별 중재 후 평가를 실시하였고, 젭슨-테일러 손 기능 평가(Jebsen-Tayler hand function test)와 운동 활동 척도 검사(Motor Activity Log; MAL)를 실험 전, 후로 실시하였다. 결과 : 라파엘 스마트 보드로 매 회기 상지기능의 부드러움과 종합점수를 측정한 결과 대상자 3은 평균값의 변화에서 유의미한 결과가 없었고 대상자 1, 2는 평균값에서 유의한 변화가 있었다. 중재 전후로 평가한 젭슨-테일러 손 기능 평가 및 운동 활동 척도 검사에서는 대상자 모두 유의한 변화를 보였다. 결론 : 진동자극을 적용한 훈련이 마비측에 대한 경험이 적은 편마비를 가진 아동에게 상지 기능과 움직임을 증진시킬 수 있는 긍정적인 영향을 보였다.

• 대한의용생체공학회:의공학회지
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• 제32권2호
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• pp.177-184
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• 2011

In this study, the system for application of the bone stimulation was implemented using high frequency and low strain method. The whole system consists of the high frequency and low strain vibration stimulation system 177 for stimulating bone, LVDT sensor, and wireless sensor based on tri-axial accelerometer. To evaluate the usefulness of the system, the frequencies and accelerations from function generator were applied to the vibration stimulation system. The range of frequency was 17 Hz, 30 Hz, 45 Hz, 50 Hz and the range of acceleration was set 0.3 g, 0.6 g, 1g, and 2 g. The measured frequencies and acceleration using LVDT (linear variable difference transformer) sensor and 3-axial accelerometer were estimated and compared. The range of frequencies average difference was from 0.0 to 0.004 Hz. As the standard deviation of frequencies estimated by LVDT sensor and accelerometer was below 0.03 Hz and the output frequencies of function generator were similar: Also the results of t-test were satisfied with conditions of p > 0.05. And the acquired frequencies and acceleration from vibration measuring device module were estimated and analyzed. As the mean of accelerations was similar to the acceleration applied from function generator. And the standard deviation of acceleration estimated from vibration measuring device module was ranged from 0.019 g to 0.038 g. Also the results of t-test were satisfied with conditions of p > 0.05. Therefore, these results were airy similar to the acceleration applied from function generator. As a result, the usefulness of the system was confirmed. n a further study, clinical experiment will be carried out with the authorization of IRB (institutional review board) so that appropriate frequency and strain would be investigated in clinical field.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2007년도 춘계학술대회 논문집
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• pp.217-218
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• 2007

• 한국정보통신학회논문지
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• 제12권11호
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• pp.1914-1922
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• 2008

한의학의 뜸 요법은 잘 알려져 있으나, 현재까지도 쑥을 연소하여 시술하는 고전적 방식을 많이 사용하고 있다. 대체의학의 뜸 기기 개발에서, 뜸에서 반응하는 인체의 특징 및 요소들을 파악하는 것은 중요하다. 그러므로 본 연구에서는 뜸 요법에 대한 뇌파변화를 고찰하고자, 자극을 가하지 않은 무자극 대상군과 간접 뜸 방식을 적용한 대상군으로 나누어, 뜸 자극에서 중요하게 여겨지는 관원(CV4), 신궐(CV8), 그리고 중완(CV12)의 경혈 점에 자극을 주어 뇌파 변화의 특징을 비교 분석하였다.

• 동력기계공학회지
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• 제14권4호
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• pp.29-36
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• 2010

인체에 음향진동장치에 의하여 자극을 가하였을 경우 영향을 고찰한다. 5명의 건강한 남자 대학생을 대상으로 하여, 3가지 형태의 음악을 음향과 진동자극의 신호원으로 사용해서 실험을 행하였다. 모든 피험자에 대하여, 자극 전, 음악자극, 진동자극, 자극 후로 나누어 뇌파를 측정하였다. 실험의 모든 피험자의 측정 데이터의 t-검정을 수행하여 유의성이 있는 데이터에 한하여 뇌파를 고찰하였다. 결과로서, 음악과 음향파와 진동자극이 뇌파에 미치는 영향은 음향진동장치에 따른 진동자극 형태, 피험자의 몸과 정신 상태에 따라 현저하게 달라질 수 있다는 것을 알 수 있다. 그리고 적절한 음악과 음향진동장치를 사용하여 특정의 뇌파 상태를 유도 할 수 있음을 확인하였다.

• 대한물리의학회지
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• 제19권1호
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• pp.81-94
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• 2024

PURPOSE: This study aimed to investigate the effect of a progressive balance training program with whole-body vibration stimulation on knee joint pain, dysfunction, psychosocial status, and balance ability in individuals aged ≥ 65 years with knee osteoarthritis. METHODS: A total of 40 individuals aged ≥ 65 years with osteoarthritis of the knees participated in the study. Using a randomization program, participants were assigned to an experimental group (n = 20) or a control group (n = 20). Both groups were assigned a knee strength training program, and a progressive balance training program with whole-body vibration stimulation was assigned to the experimental group. All interventions were conducted three times a week for four weeks. Participants were evaluated for the following: pain (numeric rating scale, NRS), knee dysfunction (Korean version of the Western Ontario and McMaster Universities Arthritis Index, K-WOMAC), fall efficacy (Korean Version Falls Efficacy Scale, K-FES), quality of life (Euro Quality of life 5 Dimension, EQ-5D), and advanced balance scale score (Fullerton advanced balance scale, FAB) before and after the intervention, and the effects of the intervention were compared accordingly between groups. RESULTS: Both groups showed significant differences in the results of the NRS, K-WOMAC, K-FES, and EQ-5D assessments before and after the intervention, and there was a significant difference in the amount of change between the two groups (p < .05). There was a significant improvement in FAB in all but items FAB 8 and FAB 9 after the intervention in the experimental group. In the control group, there was a significant improvement in FAB 1, FAB 2, FAB 7, and FAB total after the intervention (p < .05). In addition, there was a significant difference in the amount of change between the two groups in all items except FAB 8 and FAB 9 (p < .05). CONCLUSION: The progressive balance training program with whole body vibration stimulation is an effective intervention method with clinical significance in improving knee joint pain, knee disability index, psychosocial level, and balance ability in adults aged ≥ 65 with osteoarthritis of the knees.