• 제목/요약/키워드: Brain function

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감각 정보를 이용한 뱀 로봇의 행동구현 (Snake Robot Motion Scheme Using Image and Voice)

  • 강준영;김성주;조현찬;전홍태
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2002년도 하계종합학술대회 논문집(3)
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    • pp.127-130
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    • 2002
  • Human's brain action can divide by recognition and intelligence. recognition is sensing voice, image and smell and Intelligence is logical judgment, inference, decision. To this concept, Define function of cerebral cortex, and apply the result. Current expert system is lack, that reasoning by cerebral cortex and thalamus, hoppocampal and so on. In this paper, With human's brain action, wish to embody human's action artificially Embody brain mechanism using Modular Neural Network, Applied this result to snake robot.

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Distinct Features of Brain-Resident Macrophages: Microglia and Non-Parenchymal Brain Macrophages

  • Lee, Eunju;Eo, Jun-Cheol;Lee, Changjun;Yu, Je-Wook
    • Molecules and Cells
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    • 제44권5호
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    • pp.281-291
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    • 2021
  • Tissue-resident macrophages play an important role in maintaining tissue homeostasis and innate immune defense against invading microbial pathogens. Brain-resident macrophages can be classified into microglia in the brain parenchyma and non-parenchymal brain macrophages, also known as central nervous system-associated or border-associated macrophages, in the brain-circulation interface. Microglia and non-parenchymal brain macrophages, including meningeal, perivascular, and choroid plexus macrophages, are mostly produced during embryonic development, and maintained their population by self-renewal. Microglia have gained much attention for their dual roles in the maintenance of brain homeostasis and the induction of neuroinflammation. In particular, diverse phenotypes of microglia have been increasingly identified under pathological conditions. Single-cell phenotypic analysis revealed that microglia are highly heterogenous and plastic, thus it is difficult to define the status of microglia as M1/M2 or resting/activated state due to complex nature of microglia. Meanwhile, physiological function of non-parenchymal brain macrophages remain to be fully demonstrated. In this review, we have summarized the origin and signatures of brain-resident macrophages and discussed the unique features of microglia, particularly, their phenotypic polarization, diversity of subtypes, and inflammasome responses related to neurodegenerative diseases.

Expression and characterization of transmembrane and coiled-coil domain family 3

  • Sohn, Wern-Joo;Kim, Jae-Young;Kim, Dongbum;Park, Jeong-A;Lee, Younghee;Kwon, Hyung-Joo
    • BMB Reports
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    • 제49권11호
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    • pp.629-634
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    • 2016
  • Transmembrane and coiled-coil domain family 3 (TMCC3) has been reported to be expressed in the human brain; however, its function is still unknown. Here, we found that expression of TMCC3 is higher in human whole brain, testis and spinal cord compared to other human tissues. TMCC3 was expressed in mouse developing hind brain, lung, kidney and somites, with strongest expression in the mesenchyme of developing tongue. By expression of recombinant TMCC3 and its deletion mutants, we found that TMCC3 proteins self-assemble to oligomerize. Immunostaining and confocal microscopy data revealed that TMCC3 proteins are localized in endoplasmic reticulum through transmembrane domains. Based on immunoprecipitation and mass spectroscopy data, TMCC3 proteins associate with TMCC3 and 14-3-3 proteins. This supports the idea that TMCC3 proteins form oligomers and that 14-3-3 may be involved in the function of TMCC3. Taken together, these results may be useful for better understanding of uncharacterized function of TMCC3.

Designing an Emotional Intelligent Controller for IPFC to Improve the Transient Stability Based on Energy Function

  • Jafari, Ehsan;Marjanian, Ali;Solaymani, Soodabeh;Shahgholian, Ghazanfar
    • Journal of Electrical Engineering and Technology
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    • 제8권3호
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    • pp.478-489
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    • 2013
  • The controllability and stability of power systems can be increased by Flexible AC Transmission Devices (FACTs). One of the FACTs devices is Interline Power-Flow Controller (IPFC) by which the voltage stability, dynamic stability and transient stability of power systems can be improved. In the present paper, the convenient operation and control of IPFC for transient stability improvement are considered. Considering that the system's Lyapunov energy function is a relevant tool to study the stability affair. IPFC energy function optimization has been used in order to access the maximum of transient stability margin. In order to control IPFC, a Brain Emotional Learning Based Intelligent Controller (BELBIC) and PI controller have been used. The utilization of the new controller is based on the emotion-processing mechanism in the brain and is essentially an action selection, which is based on sensory inputs and emotional cues. This intelligent control is based on the limbic system of the mammalian brain. Simulation confirms the ability of BELBIC controller compared with conventional PI controller. The designing results have been studied by the simulation of a single-machine system with infinite bus (SMIB) and another standard 9-buses system (Anderson and Fouad, 1977).

물리치료학과 학생의 학업스트레스와 대학생활적응의 관계에서 사회적 지지와 자아탄력성의 매개효과 (Mediation effects of social support and self-efficacy between academic stress and college adjustment in physical therapy students)

  • 김상우;이병희
    • 대한물리치료과학회지
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    • 제27권2호
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    • pp.48-62
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    • 2020
  • Purpose: The purpose of the study was to identify the mediating effects of social support and self-efficacy between academic stress and college adjustment in physical therapy students. Design: Survey. Methods: 75 subjects were surveyed about the level of academic, Academic Stress, College Adjustment, Social Support, Self-Efficacy, and self-control. To confirm the cognitive function on brain activity were evaluated. Results: First, College students have higher academic stress and lower college adjustment. Higher social support and self-efficacy have lower academic stress and better college adjustment. Second, students with high academic stress need constant attention to increase their social support and programs to reduce academic stress. Third, students with high academic stress, low social support, and low self-efficacy can increase their cognitive strength through the brain wave thereby reducing the academic stress they are currently feeling. Conclusion: In order to improve the College Adjustment, it is considered that it is important to increase the cognitive function through brain train along with the development of a student management program that can reduce academic stress and increase social support and self-efficacy.

The Effect of Brain-computer Interface-based Cognitive Training in Patients with Dementia

  • Oh, Se-Jung;Ryu, Jeon-Nam
    • 대한물리의학회지
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    • 제13권4호
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    • pp.59-65
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    • 2018
  • PURPOSE: The purpose of the present study is to investigate the changes in the cognitive function of elderly dementia patients residing in a residential care facility, following six weeks of brain-computer interface (BCI)-based cognitive training and to determine whether BCI-based cognitive training effectively improves their cognitive functions. METHODS: Thirty subjects diagnosed with dementia were randomly assigned to either the experimental or control group. Pre- and post-test cognitive function assessments were conducted using the mini mental state examination-Korean (MMSE-K) and Korean-dementia rating scale (K-DRS). The experimental group received BCI-based cognitive training, which consisted of games such as flying a ball and exploding a bomb, while the control group participated in music listening activities and National Health Gymnastics. Both groups engaged in a total of 18 sessions (3 times per week for 6 weeks, for 40 minutes per session). RESULTS: After 6 weeks of intervention, the experimental group had significantly increased MMSE-K scores ($19.53{\pm}1.30$ to $22.20{\pm}1.15$; p<.0011) and total K-DRS scores ($87.20{\pm}4.16$ to $99.33{\pm}1.15$; p<.0011). In addition, the experimental group showed greater cognitive improvements than the control group. CONCLUSION: The results of this study suggest that BCI-based cognitive training is a positive intervention tool for improving the cognitive function of dementia patients.

드로잉 교육의 뇌과학적 기제 연구 - 애니메이션 드로잉을 중심으로 (A Study on the Brain Scientific Mechanism of Drawing Education - Focusing on the Animated Drawing)

  • 박성원
    • 만화애니메이션 연구
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    • 통권36호
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    • pp.217-236
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    • 2014
  • 본 연구는 애니메이션의 전문적인 특성을 고려한 드로잉 교수법을 연구하기위한 문헌분석 과정으로 뇌의 기능과 학습, 창작 기제를 고려한 교수법을 적용하면 애니메이션 드로잉능력이 효율적으로 신장될 것이라는 관점의 연구를 위한 원리분석 과정이다. 최근 들어 각 분야의 교육방법에 대한 대안적인 논의로 뇌기반 학습원리가 적용된 연구결과들이 발표되고 있다. 이는 미술과 드로잉 교육 뿐만 아니라, 예술전반적인 교육적 대안으로 적용 실시되고 있다. 반면, 애니메이션 드로잉은 미술적 소양을 필요로 함과 동시에 움직임에 대한 구조적 지식과 인지적 감각, 소통방식을 숙련할 수 있는 종합적인 교수법을 요하는 것에 비해 전문적인 교수법 개발 연구는 미진하다. 이에 효과적인 교육의 원리를 뇌의 기제로 바라보고 뇌가 학습하고 창의성을 발휘하게 되는 원리를 분석하여 본다. 또한 그림그리기와 뇌의 기능에 대한 원리관계를 통해 드로잉과 뇌의 관계를 알아본다. 그 결과 구조와 형태를 그릴 수 있는 인지적 정보를 관할하는 좌뇌 뿐만 아니라, 그리기와 직접적 관련이 있는 우뇌를 통합 발달시켜야 하며, 창의성이 발현되기 위해서는 물리적, 심리적 요소가 발현되는 통합적 뇌의 기제를 이해한 교수법이 개발되어야함이 드러났다. 애니메이션드로잉교육은 드로잉 능력에 필요한 예술적 창의 속성을 발휘하는 방법을 교육하는 것이기 때문이다. 이 과정은 기존의 애니메이션드로잉 교수법과의 차별성을 찾아내는 토대가 될 뿐만 아니라, 뇌기반-원리는 이후 교육의 전략과 방법 모형을 설계하는데 핵심적인 전략적 정의로 선정될 것이다.

한국형 중풍변증 표준 III을 이용한 변증진단 판별모형 (Discriminant Modeling for Pattern Identification Using the Korean Standard PI for Stroke-III)

  • 강병갑;고미미;이주아;박태용;박용규
    • 동의생리병리학회지
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    • 제25권6호
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    • pp.1113-1118
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    • 2011
  • In this paper, when a physician make a diagnosis of the pattern identification (PI) in Korean stroke patients, the development methods of the PI classification function is considered by diagnostic questionnaire of the PI for stroke patients. Clinical data collected from 1,502 stroke patients who was identically diagnosed for the PI subtypes diagnosed by two physicians with more than 3 years experiences in 13 oriental medical hospitals. In order to develop the classification function into PI using Korean Stroke Syndrome Differentiation Standard was consist of the 44 items (Fire heat(19), Qi deficiency(11), Yin deficiency(7), Dampness-phlegm(7)). Using the 44 items, we took diagnostic and prediction accuracy rate through of discriminant model. The overall diagnostic and prediction accuracy rate of the PI subtypes for discriminant model was 74.37%, 70.88% respectively.

편측 뇌손상 환자에서 특정 과제에 한정된 동측 상지의 운동 결함 분석 (Ipsilateral Motor Deficit during Three Different Specific Task Following Unilateral Brain Damage)

  • 권용현;김중선
    • The Journal of Korean Physical Therapy
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    • 제17권2호
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    • pp.67-87
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    • 2005
  • Impaired sensorimotor function of the hand ipsilateral to a unilateral brain damage has been reported in a variety of motor task. however, it is still the controversial issue because of the difficulty of detection in clinical situation, patients' variability(time after onset, contralateral upper extremity severity, other cognitive functions including apraxia), and the performed various motor task. The purpose of this study is to determine the presence of ipsilateral motor deficit following unilateral brain damage in three different specific tasks(hand tapping, visual tracking and coin rotation) compared with healthy age-sex matched control group using the same hand and to investigate the lateralized motor control in each hemispheric function. Findings revealed that stroke patients with unilateral brain damage experienced difficulties with rapid-simple repetitive movement, visuomotor coordination, complex sequencing movement on ipsilateral side. Also, Comparison of the left-hemispheric stroke groups and the right-hemispheric stroke groups revealed that patients with a left-hemisphere damage tended to be more variable in performing all of the three tasks. These results show that stroke patient with left hemisphere damage has more ipsilateral motor deficit, and the left hemisphere contributes to the processing of motor control that necessary for the executing actions with ipsilateral hand.

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