• Title/Summary/Keyword: Cognition function

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Effects of Secondary Task on Driving Performance -Control of Vehicle and Analysis of Motion signal- (동시과제가 운전 수행 능력에 미치는 영향 -차량 통제 및 동작신호 해석을 중심으로-)

  • Mun, Kyung-Ryoul;Choi, Jin-Seung;Kang, Dong-Won;Bang, Yun-Hwan;Kim, Han-Soo;Lee, Su-Jung;Yang, Jae-Woong;Kim, Ji-Hye;Choi, Mi-Hyun;Ji, Doo-Hwan;Min, Byung-Chan;Chung, Soon-Cheol;Taek, Gye-Rae
    • Science of Emotion and Sensibility
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    • v.13 no.4
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    • pp.613-620
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    • 2010
  • The purpose of this study was to quantitatively evaluate the effects of the secondary task while simulated driving using the variable indicating control of vehicle and smoothness of motion. Fifteen healthy adults having 1~2years driving experience were participated. 9 markers were attached on the subjects' upper(shoulder, elbow, Wrist) and lower(knee, ankle, toe) limbs and all subjects were instructed to keep the 30m distance with the front vehicle running at 80km/hr speed. Sending text message(STM) and searching navigation(SN) were selected as the secondary task. Experiment consisted of driving alone for 1 min and driving with secondary task for 1 min, and was defined driving and cognition blocks respectively. To indicate the effects of secondary task, coefficient of variation of distance between vehicles and lane keeping(APCV and MLCV) and jerk-cost function(JC) were analyzed. APCV was increased by 222.1% in SN block. MLCV was increased by 318.2% in STM and 308.4% in SN. JC were increased at the drivers' elbow, knee, ankle and toe, especially the total mean JC of lower limbs were increased by 218.2% in STM and 294.7% in SN. Conclusively, Performing secondary tasks while driving decreased the smoothness of motion with increased JC and disturbed the control of vehicle with increased APCV and MLCV.

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A Survey of Role Perception and Function Performance Related to Public Health Service among the Medical Staff in a National Hospital (일개 공공병원 종사자의 공공보건의료에 대한 인식과 기능수행에 대한 조사연구)

  • Cho, Young-Hye;Lee, Sang-Yeoup;Jeong, Dong-Wook;Choi, Eun-Jung;Kim, Yun-Jin;Lee, Jeong-Gyu;Go, Yu-Young;Lee, Yu-Hyone;Bae, Mi-Jin;Kim, Chang-Hoon
    • Journal of agricultural medicine and community health
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    • v.37 no.2
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    • pp.67-75
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    • 2012
  • Objectives: While there have recently been efforts to improve public health service at a governmental level, there is actually insufficient research on awareness of the roles related to public health service among hospital employees. This study examined role perception and function performance related to public health service among the medical staff in a national hospital. Methods: 15% were randomly sampled from each type of occupation among the medical staff in a national university hospital, a survey was conducted in 323 persons, and there were a total of 265 participants (80.2%): 103 doctors(38.9%), 98 nurses (37.0%), and 64 others (24.1%). Results: The hospital employees had insufficient awareness of their roles as public health service providers in terms of six required items for public health service: 1) services for supporting establishment, implementation, and assessment of public health service policies, 2) participation in the health service activities and support services by central or local governments, 3) technological support and educational services for private health service institutions, 4) health service for unprivileged brackets, 5) health service that requires association with other areas dealing with geriatric, disabled, and mentally-disordered people, and 6) health service for children and mothers. Conclusions: In general, since the hospital employees had insufficient awareness of their roles and responsibilities as public health service providers, it is necessary to secure manpower exclusively in charge of public health service and provide education about strategic public health service.

The Effect of Dance Therapy on Physical and Psychological Characteristics in The Elderly (무용요법이 노인의 신체적.심리적 특성에 미치는 효과)

  • 이영란
    • Journal of Korean Academy of Nursing
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    • v.29 no.2
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    • pp.429-444
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    • 1999
  • This study was performed to explore the effects of a dance therapy on physical and psychological characteristics in the elderly. The design of this study was a non-equivalent pre-post test experiment. The subjects consisted of elderly persons living in a facility located in Suweon and Bucheon. Fifty eight subjects, aged between 65 and 93 years who had normal cognition, sensory function, balance, and resting blood pressure. They underwent tests of balance, flexibility, muscle strength, depression, and anxiety as baseline data before dance therapy, and at 6th week and at the end of the 12nd week after following dance therapy. Twenty seven elderly persons were assigned to the experimental group and participated with the dance therapy between April and July, 1998. The dance therapy was developed by the author with the help of a dance therapist and a physiatrist. This therapy was based on the Marian Chace's dance therapy and Korean traditional dance with music. The dance therapy consists of 50 minutes session, 3 times a week for 12 weeks. One session was consisted of warming-up, expression, catharsis, sharing, and closing stage. The intensity of the dance therapy was at the 40 % of age-adjusted maximum heart rates. Data were analysed with mead standard deviation, Chi-square test, unpaired t-test, repeated measures ANOVA, and Bonferroni multiple regression using SAS program. 1. The results related to the physical characteristics were as follows : 1) The balance (standing on one leg, walking on the balancing bar), flexibility and muscle strength (knee extensor, knee flexor, ankle plantarflexor and dorsiflexor) of the experimental subjects significantly increased over time mere than that of the control subjects. 2) The experimental group had significantly higher score for balance, flexibility, muscle strength of knee extensor, and knee flexor than the control group at the 12nd week after dance therapy. 3) The experimental group had significantly higher score for muscle strength of ankle dorsiflexor and plantarflexor than the control group at the 6th week and the 12nd week after dance therapy. 2. The results related to psychological characteristics were as follows : 1) Scores of Geriatric Depression Scale, Hamilton Depression Rating Scale, and Zung's Self-rating Anxiety Scale of the experimental group were significantly decreased over time more than that of the control group. 2) The experimental group had significantly lower score for depression than the control group at the 12nd week after dance therapy. 3) The experimental group had significantly lower score for anxiety than the control group at the 6th week and the 12nd week after dance therapy. The findings showed that the dance therapy could be effective in improving the balances, flexibility, and muscle strength of lower limb, and effective in decreasing the depression and anxiety of the elderly. Additional merits of the dance therapy would be inexpensiveness, easy accessibility, and increasing interpersonal relationship. It can be suggested that the dance therapy is effective in the health promotion of the elderly.

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Effect of Home-Visit Occupational Therapy on Community Dwelling Stroke Survivors: A Case Study (지역사회 거주 뇌졸중 환자의 가정방문 작업치료 효과: 사례 연구)

  • Jeong, Eun-Hwa
    • Therapeutic Science for Rehabilitation
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    • v.9 no.2
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    • pp.87-98
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    • 2020
  • Objective : The purpose of this study was to verify the effectiveness of home-visit occupational therapy in stroke patients. Methods : Two patients with stroke who applied for home-based occupational therapy services at a health center in Seoul were enrolled. The home-visit occupational therapy program evaluates the subject's daily living, task performance, cognitive, and emotional functions, sets occupational therapy goals and plans interventions based on a client-centered approach. Occupational therapy programs consisted of 12 sessions based on the client's major problems. Results : COPM scores improved in both cases, there was an improvement in COPM scores, and in Case 2 there were improvements in MBI and K-MMSE scores. There was also an improvement in KGDS scores in Case 1. Conclusion : Home-visit occupational therapy was found to be effective in improving daily activities, cognition, and mental function of stroke patients. During home and community integration, continuous and continuous rehabilitation services need to be activated from institutional rehabilitation to community-based rehabilitation. Active home-visit occupational therapy is needed to promote physical, cognitive, mental and social access in stroke patients discharged from hospitals.

Two Cases of MELAS Syndrome Manifesting Variable Clinical Cour (다양한 임상경과를 보인 멜라스(MELAS, mitochondrial encephalopathy, lactic acidosis, and stroke-like episode) 증후군 2례)

  • Choi, Seo Yeol;Lee, Seung-Ho;Myung, Na-Hye;Lee, Young-Seok;Yu, Jeesuk
    • Journal of The Korean Society of Inherited Metabolic disease
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    • v.16 no.2
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    • pp.102-108
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    • 2016
  • Mitochondrial encephalopathy, lactic acidosis, and stroke-like episode (MELAS) syndrome is one of mitochondrial encephalopathy. As the early clinical manifestations can be variable, it is important to suspect the disease, especially in patients with multiple organ dysfunctions. A boy was diagnosed with epilepsy when he was 9 years old. Two years later, severe headache and blurred vision developed suddenly. On examination, left homonymous hemianopsia was detected with corresponding cerebral parenchymal lesions in right temporo-occipito-parietal areas. MELAS syndrome was confirmed by genetic test, which showed m.3243 A>G mitochondrial DNA mutation. Multivitamins including coenzyme Q10 were added to anticonvulsant. He experienced 4 more events of stroke-like episodes over 5 years, but he is able to perform normal daily activities. A 13-year-old boy was brought to the hospital due to suddenly developed respiratory arrest and asystole associated with pneumonia. Past medical history revealed that he had multiple medical problems such as epilepsy, failure-to-thrive, optic atrophy, and deafness. He has been on valproic acid as an anticonvulsant which was prescribed from local clinic. He recovered after the resuscitation, but his cognition and motor function were severely damaged. He became bed-ridden. He was diagnosed with MELAS syndrome by brain MRI, muscle biopsy, and clinical features. Genetic test did not reveal any mitochondrial gene mutation. Four years later, he expired due to suddenly developed severe metabolic acidosis combined with hyperglycemic hyperosmolar nonketotic coma. The clinical features of MELAS syndrome are variable. Early diagnosis before the presentation to the grave clinical course may be important for the better clinical outcome.

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Identifying the scientifically giftedness through brain's cognitive function characteristics (뇌의 인지기능 특성을 통한 과학 영재성 판별)

  • Ha, Jong-Duck;Song, Kyong-Ae
    • Journal of Gifted/Talented Education
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    • v.15 no.2
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    • pp.77-100
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    • 2005
  • This study attempted a new approach to the methods of identifying the scientifically giftedness in relation to the recent emphasis on the education for the scientifically gifted. This study focused on the processes of the cognition achievements, while only the results have been studied until now. Theoretical backgrounds about the ways of identifying the gifted, the research procedures about brain functions, and the information procedures about brain data were reviewed. Eleven scientifically gifted and 10 normal children from the 4th to the 6th grades were selected to analyze the characteristics of their brain waves with brain wave measuring instrument for PCs. The results showed that the scientifically gifted, while studying scientific and creative problems, used their right brain more than their left. When solving these problems, they utilized more of their theta and alpha brain waves than those normal children. In addition, theta brain waves of the scientifically gifted were rather active during these activities and this phenomenon was more distinctive in their right brain rather than their left. Thereby, this study implies that the characteristics of brain waves during the moments of solving certain problems can be used as a method to identify the scientifically gifted.

Association between Global Cortical Atrophy, Medial Temporal Atrophy, White Matter Hyperintensities and Cognitive Functions in Korean Alzheimer's Disease Patients (알츠하이머병 환자의 전반적 피질 위축, 내측두엽 위축, 백질 고강도 신호와 인지기능의 연관성)

  • Choi, Leen;Joo, Soo-Hyun;Lee, Chang-Uk;Paik, In-Ho
    • Korean Journal of Biological Psychiatry
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    • v.22 no.3
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    • pp.140-148
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    • 2015
  • Objectives The aim of this study is to investigate the correlation between degenerative changes in brain [i.e., global cortical atrophy (GCA), medial temporal atrophy (MTA), white matter hyperintensities (WMH)] and neurocognitive dysfunction in Korean patients with Alzheimer's disease. Methods A total of 62 elderly subjects diagnosed with Alzheimer's disease were included in this study. The degenerative changes in brain MRI were rated with standardized visual rating scales (GCA or global cortical atrophy, MTA or medial temporal atrophy, and Fazekas scales) and the subjects were divided into two groups according to the degree of degeneration for each scale. Cognitive function was evaluated with Korean version of the Consortium to Establish a Registry for Alzheimer's Disease (CERAD-K) and several clinical features, including apolipoprotein E ${\varepsilon}4$ status, lipid profile and thyroid hormones, were also examined. Chi-square test and Fisher's exact test were performed to analyze the relationship between the degree of cerebral degeneration and neurocognitive functions. Results Demographic and clinical features, except for the age, did not show any significant difference between the two groups divided according to the degree of cerebral degenerative changes. However, higher degree of GCA was shown to be associated with poorer performance in verbal fluency test, word list recall test, and word list recognition test. Higher degree of MTA was shown to be associated with poorer performance in Mini-Mental State Examination in the Korean Version of CERAD Assessment Packet (MMSE-KC), word list recognition test and construction praxis recall test. Higher degree of white matter hyperintensities was shown to be associated with poorer performance in MMSE-KC. Conclusions Our results suggest that severe brain degeneration shown in MRI is associated with significantly poorer performance in neurocognitive tests in patients with Alzheimer's disease. Moreover, the degree of GCA, MTA and white matter hyperintensities, represented by scores from different visual rating scales, seems to affect certain neurocognitive domains each, which would provide useful information in clinical settings.

A Study of the Formative Characteristics in Architecture and Fashion of the Modernism Period (모더니즘 시대의 건축과 패션에 나타난 조형적 특성에 관한 연구)

  • Kim Hye-Young;Hur Da-Sul
    • Journal of the Korean Society of Costume
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    • v.55 no.4 s.94
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    • pp.62-78
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    • 2005
  • The modern period was the time that the most radical and extensive social and mental changes were occurring throughout the history, and modernism was prevailing as a general cognition system of people. Modernism, which carries principles of progress, belief in application of scientific technology, worship of reason, ideal of liberty as a col-e value of civilization, was plated as a leading ideology in the realm of society, culture and art In the early 20th century. In this study, the formative characteristics of modernism seen in architecture and fashion are analogized and analyzed in four ways ell the basis of the theory of p. Greenhalgh. First, 'Standardization for mass-production', which is analogized which P. Greenhalgh's 'Decompart-mentalisation', 'Social Morality', and' Technology'. Standardization for mass-production in architecture focuses on the development of a design prototype in order to mass produce; the development of ready-made clothes is actively done ill the fashion area for the same purpose as well. Second, 'Rational functionality' coming from P. Greenhalgh's 'The total work of art' and 'Function'. While rational functionality in architecture puts an emphasis on the rational operation of all the functions in regard to the relation between each part and the whole, rational functionality in fashion call be mainly seen in a dramatic increase in physical activity which could be hardly found before the modernism period. Namely, all the fashion design elements are developed for a certain rational and functional design on each part as well as on the whole in order to greatly increase physical activity. Third, 'the pursuit for genuineness of objects and universality of beauty' is on the analogy of P Greenhalgh's 'Truth', 'Anti-historicism', 'Abstraction', 'Internationalism/Universality'. This idea is adopted in architecture in the form of design of geometrical abstraction. In the same way, design using geometrical abstraction comes to have a significant meaning in fashion of the modernism period. So to speak, modernism architecture and fashion can be reborn to become an inter·national style by giving up the decorative and regional design prevailing before modernism and by expressing universal aesthetics in the form of simplicity and abstraction instead. Fourth, 'Expression of progress through a change in a viewpoint' stems from P. Greenhalgh's 'Progress', 'Transformation of Consciousness', 'Theology'. In architecture, this concept appears by using new construction materials and methods and by representing new aesthetical idea. As a result, it makes it possible for people to make progress for better lives. Like in architecture, new attempts for material application and processing are made in fashion. This gives rise to a general change in a viewpoint related to fashion, so that a flew fashion design which there has never been before can come out.

Autonomic Nervous System response affected by 3D visual fatigue evoked during watching 3D TV (3D TV 시청으로 유발된 시각피로가 자율신경계 기능에 미치는 영향)

  • Park, Sang-In;Whang, Min-Cheol;Kim, Jong-Wha;Mun, Sung-Chul;Ahn, Sang-Min
    • Science of Emotion and Sensibility
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    • v.14 no.4
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    • pp.653-662
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    • 2011
  • As technology in 3D industry has rapidly advanced, a lot of studies primarily focusing on visual function and cognition have become vigorous. However, studies on effect of 3D visual fatigue on autonomic nervous system have not less been conducted. Thus, this study was to identify and determine the effect that might have a negative influence on sympathetic nervous system, parasympathetic nervous system, and cardiovascular system. Fifteen undergraduates (female: 9, mean age: $22.53{\pm}2.55$) participated and were sat on a comfortable chair, viewing a 3D content during about 1 hour. Cardiac responses like SDNN(standard deviation of RR intervals), RMS-SD(root mean squared successive difference), and HF/LF ratios extracted from the measured PPG(Photo-PlethysmoGram) before viewing 3D were compared to those after viewing 3D. The results showed that after subjects watched the 3D, responses in sympathetic nervous system and parasympathetic nervous system were activated and deactivated, respectively relative to those before watching the 3D. The results showed that HF/LF ratio, Ln(LF), and Ln(HF) after viewing 3D were significantly reduced relative to those before viewing 3D. No significant effects were observed in SDNN and RMS-SD. Results obtained in this study showed that visual fatigue induced by watching 3D adversely influenced autonomic nervous system, and thereby reduced heart rate variability causing sympathetic nervous acceleration.

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Factors that affect the frailty of the elderly people Over 70-Year-old in a Local Community (70세 이상 지역사회 거주노인의 허약 영향 요인)

  • Kim, Kyung-Hee;Yoon, Hee-Jung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.2
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    • pp.313-323
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    • 2017
  • This study is a descriptive study that investigates the factors that affect the frailty of the elderly in the late period. The data were collected using a questionnaire during the period from 1 to 31 of December 2013. The subjects were 301 elderly people aged 70 years living in M city. The data were analyzed using a $x^2$ test, t-test, and ANOVA with the SPSS Statistics 18.0 program. Hierarchical regression analysis was performed to examine the factors that affect the weakness of elderly people. The results showed that 15.3% of the elderly living at home were frail. The factors that affect the frailty of the elderly were sex (p<0.01), nutritional status (p<0.01), cognition function (p<0.01), ADL (p<0.01), IADL (p<0.05), visual acuity (p<0.05), and chewing discomfort (p<0.05). A higher the degree of frailty was associated with women, poorer nutritional status, higher impairments to perform the daily activities (ADL and IADL), poorer hearing, and more feeling of chewing discomfort. These results can explain the frailty of elderly people over 70 years of age in a local community and the variables of health. The results suggest that the development of a comprehensive program for the elderly with weak physical, emotional, and functional health should be given priority.