• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1998년도 추계학술대회
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• pp.289-290
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• 1998

Purpose To investigate the difference of total activation in visual area, motor area, and cerebellum according to the stimulation paradigm. Materials and Methods Functional MR imaging was performed in 5 healthy volunteers with visual and motor activity using EPI technique. LED and Checker-Board stimulation were performed for visual activity. Thumb motion and Finger tapping were performed for motor and cerebellum activity. Time course data was obtained by calculating the total activation which was defined as the number of activated pixels x averaged pixel intensity. Results In the case of visual activity with LED stimulation, we found increased total activity of more than 100% compared with Checker-Board stimulation. In the case of motor area and cerebellum with Finger tapping stimulation, we found increased total activity of more than 100% and 150%, respectively compared with Thumb motion stimulation.

• 대한임상전기생리학회지
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• 제5권1호
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• pp.33-43
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• 2007

This study divided 35 hemiplegia patients into control group having standard physical therapy and gait training and functional electrical stimulation(FES) group using FES during gait training in order to examine the effects of applying FES to ankle joint dorsiflexor on motor unit action potential. Stimulation conditions of FES were pulse rate 35 pps, pulse width $250{\mu}s$, and on-time 0.3 second, treatment hour was 30 min. and treatment period was once a day for five days a week through six weeks. For functional evaluations before and after treatment, root mean square(RMS) were measured and the following conclusions were obtained. : In RMS analysis of motor unit action potential, gastrocnemius was significantly reduced in both weight bearing(p<.001) and bearing condition (p<.05). In conclusion, application of FES to hemiplegia patients in recovery stage during gait training decreased RMS and it was interpreted that it was caused by mitigation of muscular spasticity by reduction of motor unit.

• 한국전문물리치료학회지
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• 제21권4호
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• pp.23-33
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• 2014

The aim of this study was to evaluate the effects of walking on a treadmill while using dynamic functional electrical stimulation (Dynamic FES) on functional ability and gait in chronic stroke patients. This was a prospective, randomized controlled study. Twelve patients with chronic stroke (>24 months) who were under grade 3 in dorsiflexor strength with manual muscle test were included and randomized into intervention (Dynamic FES) ($n_1$=7) and control (FES) ($n_2$=5). Both the Dynamic FES group and FES group were given a neuromuscular development treatment. The Dynamic FES group has implemented a total of 60 minutes of exercise treatment and gait training with Dynamic FES application. The FES group, with the addition of applying FES while sitting, has also implemented a total of 90 minutes of gait training on treadmill after the exercise treatment. Both two groups accomplished the program, twice a week, for a total of 24 times in a 12-week period. Exercise treatment, gait training on treadmill, and both Dynamic FES and FES were implemented for 30 minutes each. Korean version activities-specific balance confidence scale (K-ABC) was measured to determine self-efficacy in balance function. Timed up and go (TUG) test was performed to evaluate the physical performance. K-ABC, TUG, Berg balance scale (BBS), modified physical performance test (mPPT) and G-walk were evaluated at baseline and at 12 weeks. After 12 weeks, statistically significant differences (p<.05) were apparent in the Dynamic FES group in the changes in K-ABC and BBS. mPPT, TUG, gait speed, stride length and stance phase duration (%) were compared with the FES group. K-ABC had higher correlation to BBS, along with mPPT to TUG. Our results suggest that walking with Dynamic FES in chronic stroke patients may be beneficial for improving their balance confidence, functional ability and gait.

• Physical Therapy Rehabilitation Science
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• 제6권2호
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• pp.59-64
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• 2017

Objective: Elderly people with dementia experience not only cognitive dysfunction but also motor function deficits, such as balance and gait impairments. Recently, transcutaneous electrical nerve stimulation (TENS) has been used to reduce pain as well as to control muscle spasm, spasticity and motor performance in various types of subjects. The purpose of this study determined the effect of a single trial TENS on balance and gait function in elderly people with dementia. Design: A randomized controlled trial. Methods: Twenty-two subjects with dementia were assigned to the TENS group (n=12) and ten subjects were assigned to the control group (n=10) randomly. Subjects were classified into two groups: the TENS group (n=12) and the placebo-TENS group (n=10). The TENS group had electrical stimulation applied on the calf muscle for 15 minutes, while the placebo-TENS group had not received real electrical stimulation. The timed up and go test (TUG) and functional reach test (FRT) were used to measure the balance function, and the 10 meters walk test (MWT) and 6MWT were used to assess gait ability. All tests were performed before and after intervention under a single-blinded condition. Results: After intervention, there were significant improvements in TUG, FRT, 10MWT, and 6MWT results in the TENS group (p<0.05), while the placebo-TENS group did not show significant changes in all outcome measurements. There were also differences in all tests between the two groups at post-measurements (p<0.05). Conclusions: This study demonstrated that a single trial TENS application on the calf may be used to improve balance and gait function in elderly people with dementia.

• 재활치료과학
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• 제1권2호
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• pp.5-13
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• 2012

본 문헌고찰의 목적은 뇌졸중을 경험하는 대상자들을 위한 체성감각 자극 중심치료의 효과와 관련된 지금까지의 문헌들을 확인하고, 본 문헌고찰에 근거하여 임상환경에서 보다 효과적으로 적용할 수 있는 이상적인 체성감각자극 훈련방법을 제안하고자 함이다. 먼저, 문헌연구를 통해 뇌졸중을 경험하는 대상자를 중심으로 지금까지 주로 적용되었던 전기적 체성감각자극 치료의 효과성과 제한점을 확인하고, 최근문헌에 근거하여 임상환경에서 보다 효율적 적용이 가능할 것으로 기대되는 앞으로의 치료적 발전방향성을 제시하였다. 본 문헌고찰 결과, 현재까지 뇌졸중을 경험하는 대상자의 기능회복을 위한 체성감각 중심훈련의 필요성을 강조하는 연구 결과가 어느 정도 축적되어 있었음에도 불구하고 실제 임상에서는 재활치료 시 치료적인 여건에 제한으로 인해 구체적인 체성감각 자극입력의 치료적 적용은 제한점이 많은 것으로 확인되었다. 뿐만 아니라, 현재 이용 되고 있는 치료도구 역시 체성감각 및 특수감각을 고려한 도구는 거의 없는 것이 현실이었다. 하지만 본 문헌고찰을 통해서 분명히 확인할 수 있었던 것은 적절한 체성감각과 특수감각의 통합적 적용은 뇌졸중을 경험하는 대상자의 기능회복에 매우 긍정적인 효과를 보여주었다는 점이다. 뿐만 아니라, 치료적 환경에서 적용 가능한 적절한 기계적 인터페이스의 적용은 향후 뇌 손상 환자의 재활에 매우 긍정적인 영향을 줄 수 있을 것이라고 기대된다.

• 대한한방내과학회지
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• 제40권4호
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• pp.697-708
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• 2019

Objective: The aim of this study was to introduce gastric dysmotility as a common cause in patients with concurrent functional dyspepsia and chronic atrophic gastritis. Method: Dyspeptic symptoms, the Rydoraku score, gastric motility (electrogastrography, bowel sound analysis), gastric mucosa (gastroendoscopy), and blood and blood chemistry were all evaluated. For the treatment method, Pyengwi-san (solution) and Banwhasashim-tang (extract) were used as herbal drugs. Both ST36 electrical stimulation and simple immersion stimulation of CV11, 12, and 13 in the abdomen were applied. Results: Dyspeptic symptoms including indigestion, headache, and insomnia were all relieved. Gastric myoelectrical activity and gastric pyloric function were additionally improved. The condition of the gastric mucosa was changed from atrophic to erosive. Other side-effects of the treatment were not noted. Conclusion: The traditional Korean treatment showed effectiveness in the relief of dyspeptic symptoms and mucosal improvement of chronic atrophic gastritis. Gastric dysmotility is a common cause of the condition being concurrent with both functional dyspepsia and chronic atrophic gastritis without Helicobacter pylori infection.

• 재활치료과학
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• 제7권1호
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• pp.63-77
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• 2018

목적 : 본 연구는 기능적 전기 자극을 병행한 과제 지향적 훈련이 불완전 경수 손상 환자의 손 기능에 미치는 영향을 알아보고자 하였다. 연구방법 : 대상자는 불완전 경수 손상 진단을 받은 성인 3명으로, ABA 설계를 사용하였으며, 연구기간 동안 기초선(A1) 5회기, 중재기(B) 20회기, 재기초선(A2) 5회기로 총 30회기 실시하였다. 중재기(B) 동안 기능적 전기 자극을 병행한 과제 지향적 훈련이 제공되었고, 모든 회기에는 손 기능을 평가하기 위해 상자와 나무토막 검사(Box and Block Test), 떨어지는 막대 잡기(Grip the falling bar)와 먹기 흉내 내기(Simulated feeding)를 측정하였으며, 기초선(A1) 전, 재기초선(A2) 후로 Canadian Occupational Performance Measure(COPM), Jebsen-Taylor Hand Function Test(JTHFT)와 Wolf Motor Function Test(WMFT)를 실시하여 중재 효과를 살펴보았다. 결과 : 모든 대상자는 상자와 나무토막 검사(Box and Block Test), 떨어지는 막대 잡기(Grip the falling bar)와 먹기 흉내 내기(Simulated feeding)를 통해 기초선(A1)보다 중재기(B)에서 우세 손 기능이 향상되었고, 재기초선(A2)에서 그 효과가 유지되었다. 재기초선(A2) 후 COPM, JTHFT와 WMFT의 결과, 우세 손 기능의 향상과 과제 수행도와 만족도의 향상을 보였다. 결론 : 기능적 전기 자극을 병행한 과제 지향적 훈련은 경수 손상 환자의 손 기능뿐만 아니라, 대상자가 선택한 훈련 과제의 과제 수행도와 만족도 향상에 효과적이다.

• 대한임상검사과학회지
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• 제45권4호
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• pp.170-179
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• 2013

There is a correct way to avoid any sequale in the central motor area during neurosurgery procedures. A clear way to find the circumference of the central sulcus, central motor, and sensory areas by giving cortical electrical stimulation to the central motor area immediate after surgery is proposed. Looking at patients who underwent brain surgery September 2009 to July 2013, the central sulcus and speech areas around the central area of the brain was investigated, using the practices of either a localized brain map check or a direct cortical electrical stimulation test. Brain maps localized around the surgical site through functional movement or speech areas were identified. Accurate tests done during surgery without damage to motor neurons or after surgery were conducted smoothly. Although successful brain map test localization can be accomplished, there are some factors that can interfere. The following phenomena can reverse the phase: (1) the first sensory / motor in the case of patients severe nerve damage; (2) placement of the electrode on top of the vessel; (3) presence of a brain tumor near the brain cortex; (4) use of anesthesia if patient cooperation is difficult; and (5) location of the electrode position and stimulus is inappropriate.

• 한국소음진동공학회논문집
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• 제21권1호
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• pp.31-40
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• 2011

This paper examines the dynamic characteristics of a human carpal muscle through theoretical analysis and experiment. The carpal muscle was modeled as a 1-DOF vibration system and vibration response due to a ramp function force was calculated. The electromyogram signal corresponding to the muscle excitation force was measured, and the excitation force function of an envelope curve from the electromyogram signal was extracted. The ramp input function of electrical stimulation to the carpal muscle was applied by using a device for functional electrical stimulation, and the angular displacements corresponding to steady state response were measured. Theoretical calculations of the vibration response displacements were compared with the experimental results of the angular displacements, and have shown a good agreement with the result that is linearly proportional to the excitation force magnitude. As a result, the relationship between the input current of the electrical stimulation and the excitation force magnitude was inferred. The result was shown that it can be applied to develop rehabilitation training devices.

• Journal of the Optical Society of Korea
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• 제20권1호
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• pp.88-93
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• 2016

Recently laser speckle contrast (LSC) imaging has become a widely used optical method for in vivo assessment of blood flow in the animal brain. LSC imaging is useful for monitoring brain hemodynamics with relatively high spatio-temporal resolution. A speckle contrast imaging system has been implemented with electrical sensory stimulation apparatus. LSC imaging is combined with optical intrinsic signal imaging in order to measure changes in cerebral blood flow as well as neural activity in response to electrical sensory stimulation applied to the hindlimb region of the mouse brain. We found that blood flow and oxygen consumption are correlated and both sides of hindlimb activation regions are symmetrically located. This apparatus could be used to monitor spatial or temporal responses of cerebral blood flow in animal disease models such as ischemic stroke or cortical spreading depression.