• 대한물리의학회지
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• 제18권3호
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• pp.47-53
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• 2023

PURPOSE: A visual feedback method was proposed to induce brain stimulation in a stroke patient, and among them, there was a treatment using a mirror. On the other hand, mirror therapy focuses only on the functional changes in body movements, and analysis of neurophysiological mechanisms of brain activity is lacking. In addition, studies on evaluating the activity and response generated in specific brain regions during visual feedback training using mirrors are insufficient. METHODS: Fifteen healthy adults (male: 10, female: 5, Years: 23.33 ± 1.23), who were right-handed were recruited. By attaching the C3, Cz, and C4 channels in the sensorimotor cortex using an electroencephalogram, training was performed under the conditions without mirror-based visual feedback (No-condition) and with visual feedback (Tasks-condition). At this time, the immediate activity of the mu-rhythm in response to training was separated and evaluated. RESULTS: The tasks-condition of C3, Cz, and C4 channels activated the relative mu-rhythm rather than the no-condition, and all showed significant differences (p < .05). In addition, in all channels at the start time, the tasks-condition was more active than the no-condition (p < .05). The activity of the cortical response was higher in the tasks-condition than in the no-condition (p < .05). CONCLUSION: The mu-rhythm activity can be evaluated objectively when visual feedback using a mirror is applied to healthy subjects, and a basic analysis protocol is proposed.

• 인간행동과 음악연구
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• 제20권2호
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• pp.33-60
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• 2023

본 연구는 국외 파킨슨병 환자의 신체 재활을 위해 음악을 사용한 중재 연구의 연구 특성을 분석 및 고찰한 연구로 최근 20년간 진행된 연구 중 24편의 중재연구를 음악사용 수준에 따라 분류하여 요약 제시하였다. 분석된 연구 내용을 통해 파킨슨병 환자의 운동 산출 시 움직임의 시작 및 종료와 관련된 타이밍 문제를 개선할 수 있는 음악 요소가 무엇인지에 대해 고찰하였다. 분석 결과, 신체 기능의 변화를 유도하기 위해 제공한 음악사용 수준의 차이에 따라 음악 기반 중재연구(music-based intervention) 6편과 리듬기반 중재연구(rhythm-based intervention) 18편으로 나타났다. 이처럼 음악 수준에 따른 연구 특성을 고찰 후 음악사용의 공통 요소인 '리듬'이 대상자의 문제 개선에 적합한 중재 요소였음을 결론 도출하였다. 또한 연구자의 특성이 음악 요소의 활용 범위 및 음악사용의 정도와 관련이 있으며, 이것이 중재 효과의 다양성과 관련이 있다고 제시하였다. 따라서 본 연구는 실제 임상 환경에서 파킨슨병 환자를 포함하여 다양한 신체기능 문제 개선을 위한 신체 재활 중재에 적용이 가능한 음악사용의 근거를 학술적으로 제시하는 것으로 사료된다.

• 디지털융복합연구
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• 제16권9호
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• pp.293-299
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• 2018

Led Zeppelin, Steely dan, 밴드 TOTO, Spyro Gyra 등 많은 뮤지션들 사이에서 사랑받아 온 리듬인 Halftime Shuffle Groove에 대해 연구해 본다. 기본적인 Halftime Shuffle의 이해를 토대로 하여 위 뮤지션들의 연주사례들을 기반으로 각 대표 곡들을 비교 분석하여 리듬패턴간의 간결하면서도 상당히 다른 연주방법을 악보, 웨이브 음원 등을 통해 살펴본다. 결과적으로 다양한 가능성들을 살펴 볼 수 있었으며, 세계적으로 인정받은 연주자들의 리듬을 분석하고 연구하여 현대 음악에 좀 더 효율적이고 모던한 리듬패턴의 다양성을 모색해 보는 것은 대단히 중요하다 생각한다. 본 논문은 Halftime Shuffle Groove와 그 성질을 지닌 리듬들을 분석하여 기계화 된 리듬에 편협하지 않는 다양한 가능성에 대해 연구해보는 논문이다.

• 한국음향학회지
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• 제30권3호
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• pp.136-141
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• 2011

본 논문에서는 청각 기억 게임을 위하여 두 개의 소리 파형을 비교하여 파형의 리듬 유사도를 정량적으로 측정하는 기술을 제안한다. 제안한 방법은 두 입력 파형에 대하여 에너지 변화, 에너지 피크의 지속 시간, 음색 등을 분석하여 각 파형에 포함된 비트 위치를 검출하고, 두 파형의 템포 차이와 비트 수의 차이를 보상하는 과정을 통하여 두 파형의 리듬 벡터를 각각 정의한다. 다음, 두 리듬 벡터 사이의 차이와 비트 수의 차이를 적용하여 두 입력 파형의 리듬 유사도를 정량적으로 표현하는 식을 정의한다. 제안한 방법으로 측정한 리듬 유사도와 주관적 청취 평가로 측정한 리듬 유사도를 비교하였으며, 두 방법에 의한 리듬 유사도가 상관도 0.86을 가지는 것을 확인하였다.

• 한국실내디자인학회논문집
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• 제26권3호
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• pp.25-33
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• 2017

The purpose of this study is to analyze the characteristics of interior space in his design hotel through the analysis of Tony Chi 's work and to present the direction of the design direction of the interior space of the design hotel in the future based on the results. The results are summarized as follows. First, the characteristics of the interior space of Tony Chi are divided into visual balance, repetitive rhythm, symbolic emphasis, exaggerated scale, design harmony, and physical borderlessness. Second, the spatial composition through visual balance was consistently shown in all cases, mainly by arranging elements such as furniture and lighting symmetrically. Third, the spatial composition through repetitive rhythm did not show its characteristics at the beginning of the works, but gradually appeared as repetitive rhythm expression using bold pattern. Fourth, Toni Chi constantly expressed the space composition through symbolic emphasis during the planning of the design hotel. Fifth, the exaggerated scale was mainly used to express the architectural detail vertically according to the height of the ceiling to express a grand space and appear in many works. Sixth, Toni Chi consistently expressed the composition of space through the harmony of design of oriental and western cultures, classical and modern designs in all cases. Seventh. In order to provide curiosity induction and aesthetic experience, spatial composition through physical borderlessness was used.

• 디지털융복합연구
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• 제7권2호
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• pp.93-102
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• 2009

Since video is composed of unstructured data with massive storage and linear forms, it is essential to conduct various research studies to provide the required contents for users who are accustomed to dealing with standardized data such as documents and images. Previous studies have shown the occurrence of undetected and false detected shots. This thesis suggested shot verification and video retrieval system using visual rhythm to reduce these kinds of errors. First, the system suggested in this paper is designed to detect the parts easily and quickly, which are assumed as shot boundaries, just by changing the visual rhythm without playing the image. Therefore, this enables to delete the false detected shot and to generate the unidentified shot and key frame. The following are the summaries of the research results of this study. Second, during the retrieving process, a thumbnail and keyword method of inquiry is possible and the user is able to put some more priorities on one part than the other between the color and shape. As a result, the corresponding shot or scene is displayed. However, in the case of not finding the preferred shot, the key picture frame of similar shot is supplied and can be used in the further inquiry of the next scene.

• Clinical and Experimental Pediatrics
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• 제53권6호
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• pp.680-687
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• 2010

Patients with congenital heart diseases (CHD) are confronted with early- and late-onset complications, such as conduction disorders, arrhythmias, myocardial dysfunction, altered coronary flow, and ischemia, throughout their lifetime despite successful hemodynamic and/or anatomical correction. Rhythm disturbance is a well-known and increasingly frequent cause of morbidity and mortality in patients with CHD. Predisposing factors to rhythm disturbances include underlying cardiac defects, hemodynamic changes as part of the natural history, surgical repair and related scarring, and residual hemodynamic abnormalities. Acquired factors such as aging, hypertension, diabetes, obesity, and others may also contribute to arrhythmogenesis in CHD. The first step in evaluating arrhythmias in CHD is to understand the complex anatomy and to find predisposing factors and hemodynamic abnormalities. A practical stepwise approach can lead to diagnosis and prompt appropriate interventions. Electrophysiological assessment and management should be done with integrated care of the underlying heart defects and hemodynamic abnormalities. Catheter ablation and arrhythmia surgery have been increasingly applied, showing increasing success rates with technological advancement despite complicated arrhythmia circuits in complex anatomy and the difficulty of access. Correction of residual hemodynamic abnormalities may be critical in the treatment of arrhythmia in patients with CHD.

• Journal of Pharmaceutical Investigation
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• 제38권3호
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• pp.151-155
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• 2008

Circadian variations of acebutolol and its main metabolite, diacetolol pharmacokinetics were studied after a single oral administration of acebutolol (10 mg/kg) to eight rabbits at 10 : 00 AM (in the morning) and 10 : 00 PM (at night). The plasma concentration profiles of acebutolol were significantly different (P<0.05) between 10 : 00 AM and 22 : 00 PM, suggesting circadian variations of pharmacokinetic behaviors. A significant circadian rhythm of pharmacokinetic parameters was noted in rabbits, showing higher total body clearance (CL/F), and lower the area under the plasma concentration-time curves (AUC) of acebutolol than that at night. The half-life ($t_{1/2}$) of acebutolol and diacetolol were also significantly shorter in the morning than at night (P<0.05). Metabolite-parent AUC ratio at night significantly decreased compared to in the morning, implying that night time could inhibit acebutolol metabolism than in the morning. From this study there was an administration-time difference of acebutolol pharmacokinetics in the rabbits. The optimized dosing regimen of acebutolol can be decided by considering circadian rhythm so that the effective therapies are established for patients.

• 대한의용생체공학회:의공학회지
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• 제27권6호
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• pp.384-391
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• 2006

Variation of brain dynamics under Zen meditation has been one of our major research interests for years. One issue encountered is the inaccessibility to the actual meditation level or stage as a reference. In this paper, we propose an alternative strategy for investigating the human brain in response to external flash stimuli during Zen meditation course. To secure a consistent condition of the brain dynamics when applying stimulation, we designed a recording of flash visual evoked potentials (F-VEPs) based on a constant background EEG (electroencephalograph) frontal $\alpha-rhythm$ dominating activities that increase significantly during Zen meditation. Thus the flash-light stimulus was to be applied upon emergence of the frontal $\alpha-rhythm$. The alpha-dependent F-VEPs were then employed to inspect the effect of Zen meditation on brain dynamics. Based on the experimental protocol proposed, considerable differences between experimental and control groups were obtained. Our results showed that amplitudes of P1-N2 and N2-P2 on Cz and Fz increased significantly during meditation, contrary to the F-VEPs of control group at rest. We thus suggest that Zen meditation results in acute response on primary visual cortex and the associated parts.

• 음성과학
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• 제12권1호
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• pp.107-119
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• 2005

The current study considers that the distinctive acoustic properties and variations in the closed plateau are realized by four different pitch accents(/Hi*_ H*/ or /Hi*_$h*_f$ for an emphatic phrase and /hi*_ H*/ for a neutral phrase) in an intermediate phrase in the French intonational structure. Thus, an attempt is made to define the acoustic property of the CP in the ip according to the duration time and pitch range, while different combinations of the four pitch accents of the CP are used to explain the way a speaker will highlight. The duration time of the CP was measured at about 0.67 sec. for males and 0.75 sec. for females. The duration properties of the plateau in the CP were found to control the pitch range based on two different prominent pitch accents, which appeared in more than two APs. Therefore, the ip was identified as having a hierarchical level in the French intonational structure, along with the AP and IP. In addition, the CP in the ip was used as a specific location to explain the pragmatic meaning of the rhythm using the two acoustic factors and different combinations of the four pitch accents.