• 제목/요약/키워드: Physiological reactions

검색결과 177건 처리시간 0.021초

자동차 경적소리에 대한 심리생리학적 반응 비교 (COMPARATIVE ANALYSIS OF PSYCHOPHYSIOLOGICAL REACTIVITY TO AUDITORY STIMULATION WITH AUTOMOBILE HORNS)

  • ;민윤기;손진훈;정인승
    • 한국감성과학회:학술대회논문집
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    • 한국감성과학회 1999년도 춘계학술발표논문집 논문집
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    • pp.221-230
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    • 1999
  • Automobile horn's psychoacoustic characteristic and significance as a anturalistic signal of danger makes it a valuable auditory stimulus to study such psychophysiological responses as startle, orienting and defense reactions. However, comparison and differentiation of physiological responses to commercially available horns is a complicated task due to small contrast of technical features of horns and influence of such processes as habituation on physiological outcome with increased number of auditory stimulation trials. In the study on 10 college students we performed comparative analysis of tonic and phasic reactivity of physiological responses mediated by autonomic nervous system in order to identify role of habituation and decrement of autonomic responsivity, as well as possibility o differentiate subjectively most and least preferred and subjectively more appropriate horns according to physiological manifestations. It was showed that electrodermal and cardiovascular reactivity have concurrent patterns of adaptation to repeated stimulation, namely skin conductance variables habituated, cardiac reactivity failed to show signs of habituation, while vascular component of response were facilitated demonstrating marked sensitization. Differentiation of Physiological responses to horns with respect to their subjective rating scores was possible, however electrodermal reactivity was effective only at the first block of trials, while phasic and tonic cardiovascular reactivity differentiate responses during whole course of experiment. There are discussed possible autonomic mechanisms involved in mediation of observed results.

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각 환경기온하에서의 성인 남녀의 피부온 비교 (A comparision study on the variation of skin temperature on the adult male. female at environmental temperature)

  • 심부자
    • 대한인간공학회지
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    • 제16권2호
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    • pp.39-59
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    • 1997
  • With a view to providing basic data for designing male's and female's clothes, healthy males and females(five each) were exposed to three different environmental temperature($20{\pm}1.0^{\circ}C$, $28{\pm}1.0^{\circ}C$, $32{\pm}1.0^{\circ}C$) in the nude. Their adaptation of skin temperature, physiological responses( rectal temperature, blood pressure, pulse rates) and psychological reactions(thermal, comfort and perceptive sweaty sensations) were analyzed as follows; The subjects's skin temperature had a similar look of adaptation, but the stability of skin temperature differed at tha $20{\pm}1.0^{\circ}C$ and at the $28{\pm}1.0^{\circ}C$ Males had higher skin temperature at three environmental temperatures, but females showed a higher temperature change at the $20{\pm}1.0^{\circ}C$ and $28{\pm}1.0^{\circ}C$ and males at the$32{\pm}1.0^{\circ}C$ Thus females were more resistant to the cold, while males were more resistant to the heat. As environmental temperature increased, rectal temperature and pulse rates also grew up. Females turned higher in rectal temperature and lower in blood pressure, but both sexes had a normal range of physiological reactions. Even though three environmental temperatures were same changes in thermal sensation at $28{\pm}1.0^{\circ}C$and in perceptive sweat sensation at $32{\pm}1.0^{\circ}C$, two sexes had the same response in comfort sensation at the three environmental temperatures.

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산림과 도심에서의 조망 및 보행활동이 인체의 생리·심리에 미치는 효과 (Physiological and Psychological Effects of Viewing and Walking in Forest and Urban Area)

  • 지경배;김경남;한갑수
    • 한국환경과학회지
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    • 제21권5호
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    • pp.605-611
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    • 2012
  • The purpose of this study is to analyze psychological and physiological effects accordance with viewing and walking in the forest and urban area. In the result of measurement of physiological reactions in nervous system, viewing of the forest had a calming effect on the nervous system by reducing blood pressure and heart rate. The other hand, viewing and walking in the urban area compared to the forest area raised stress by increasing blood pressure and heart rate. In addition, viewing in forest area was effective in stress relief by noticeable reduction of the amylase concentration. In contrast, walking in the urban area was also confirmed an increase of stress by increasing the concentration of the amylase. A viewing and walking in forest area was effective in alleviating depressed on anxiety, anger, fatigue and confusion.

PHYSIOLOGICAL RESPONSES OF GROWING RAMS TO ASBESTOS SHADING DURING SUMMER

  • Tharwat, E.E.;Amin, S.O.;Younis, A.A.;Kotby, E.A.
    • Asian-Australasian Journal of Animal Sciences
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    • 제4권4호
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    • pp.395-398
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    • 1991
  • Physiological reactions of 24 six months old (22.7 kg. body weight) Barki ram lambs, to hot summer conditions, as influenced by asbestos shading at Maryout area were studied. Animals (12 shaded and 12 Unshaded) developed hyperthermia during summer as their rectal temperature (RT) and respiration rate (RR) were always higher (p<0.01) than normal. Asbestos shading caused higher (p<0.05) RT and RR ($39.5^{\circ}C$ and 69.9 r.p.m. vs. 39.2 and 45.7 r.p.m.) of rams at morning (6-8 a.m.) which became lower ($39.9^{\circ}C$ and 104.3 r.p.m. vs. $40.1^{\circ}C$ and 120.5 r.p.m.) in afternoon (2-4 p.m.) as compared to sun exposure. Shading also resulted in higher hematocrit value (PCV) (35.3% vs. 33.0%) and lower (p<0.05) daily weight gain (128.57 vs. 131.43 g). Diurnal (p<0.01) and monthly (p<0.05) RT and RR changes were closely associated with air temperature (AT) fluctuations. Monthly variation (p<0.05) in PCV was evident. Puberty was reached one month later in the shaded as compared to the unshaded group (265 vs. 232.3 day, respectively). It is concluded that asbestos shading prevents efficient heat dissipation to the sky by hyperthermic rams during summer nights. Construction materials for animal shelters are of extreme practical importance.

태음조위탕(太陰調胃湯)을 복용한 태음인(太陰人) 소음인(少陰人) 소양인(少陽人)의 반응에 대한 임상보고 (Clinical Report about the Adverse Reactions of Taeeumin.Soeumin.Soyangin by Taeeumjowi-tang)

  • 김효정;김종열
    • 동의생리병리학회지
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    • 제22권6호
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    • pp.1600-1605
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    • 2008
  • The objectives of this study were to survey the adverse reactions by Taeeumjowi-tang and to compare the tendency of symptoms by Sasang constitutional type. The clinical data for this study were based on the medical records of 78 cases collected from an oriental clinic. The major results of this survey are following: The 5.8% of Taeeum-in who took Taeeumjowi-tang showed side effects. And the 52.4% of Soeum-in and 41.6% of Soyang-in also showed side effects against Taeeumjowi-tang. They complained of excitation, irritability, restlessness, hypersensitivity, tinnitus, insomnia, upper abdominal discomfort, poor appetite, thirst, perspiration, dizziness, chest pain, tremor and evacuation troubles in common. And these adverse symptoms were similar to that by Ma-hwang. Therefore if we make a suitable medication guide for Ma-hwang based on Sasang constitutional type, it will be able to maximize the efficacy and minimize the adverse effect.

Formocresol, Glutaraldehyde가 유견 계승치 치배 및 주위조직에 미치는 영향에 관한 병리조직학적 연구 (THE EFFECTS OF FORMOCRESOL AND GLUTARALDEHYDE ON THE PERFORATED INTERRADICULAR TISSUES AND TOOTH GERMS OF PRIMARY TEETH IN DOGS)

  • 최병재;이종갑
    • 대한소아치과학회지
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    • 제8권1호
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    • pp.55-63
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    • 1981
  • The purpose of this study is to observe the effect of formocresol and glutaraldehyde to tooth germs and periapical tissues after perforation of interradicular portion of pulpal floor and application of physiological saline solution in control groups, formocresol and glutaraldehyde in experimental groups. The following results were obtained 1. In control groups, normal healing processes were seen, and, on the sixteenth day, the epithelization of injured areas was completed. Inflammatory reactions were limited to the injured surface, and the underlying alveolar bone were normal and successive tooth germs were normal. 2. In both formocresol groups and glutaraldehyde groups, tissue reactions were identical. Inflammatory reactions were slightly compared with control groups, but the surface epithelizations were delayed compared with control group. 3. In both formocresol and glutaraldehyde groups, necrosis was seen in superficial tissue of bone marrow, and, at 24th day, center area of bone marrow on the successive tooth germs were losed and replaced with connective tissue, and superficial soft tissue of the injured area was connected with soft tissue on the successive tooth germ. In remaining alveolar bone, osteoclastic reaction was remarkable. 4. In both formocresol and glutaraldehyde groups, there is no injury to the successive tooth germs. 5. In both formocresol and glutaraldehyde groups, periodontal membrane was normal, but the partial resorption of cementum and dentin near the injured area were seen.

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한국의 열감분포에 관한 생리 기후학적 연구 - 신유효온도를 중심으로 - (A Physioclimatic Study on the Thermal Sensation in Korea)

  • 강철성
    • 대한지리학회지
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    • 제32권2호
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    • pp.129-140
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    • 1997
  • 본 논문에서는 인간 생리 및 생활에 가장 기본이 되는 온도, 상대습도를 기초로 하여 인간의 열긴장도를 측정하여 우리나라의 열감분포의 특성을 파악하였다. 연구 방법은 열지수 분석을 중심으로 하였다. 열지수는 습도계산도에서, 월별 열지수 및 연누적 열지수를 계산하여 한국의 연누적 열지수 분포도를 작성하였다. 연누적 열지수 분포의 분석 결과는 우리 나라의 대부분 지역이 한랭긴장도가 나타나는 지역이고 남쪽에서 북쪽으로, 해안에서 내륙으로 갈수록 한랭긴장도가 높아지고 있다. 특히 삼지연. 풍산, 장진을 중심으로 한 개마고원 지역이 높은 한랭긴장도 지역이고, 제주와 서귀포룰 포함한 제주도 지역이 가장 낮은 긴장도를 보이고 있다. 전자는 겨울에 시베리아 기단의 영향을 직접 받고. 고도가 매우 높은 내륙 산지 지역이기 때문이고, 후자는 위도와 바다의 영향으로 특히 겨울에 온화한 지역이기 때문이다.

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황기건중탕이 알레르기에 미치는 영향 (Inhibitory Effects on the Type I hypersensitivity and Inflammatory Reaction of Hwanggigunjung-tang)

  • 이정훈;홍현우;감철우;박동일
    • 동의생리병리학회지
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    • 제17권5호
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    • pp.1293-1298
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    • 2003
  • HGJT has been used for the treatment of general weakness, digestive organ disease and so on. This study was carried out for the purpose of knowing the inhibitory effect on the Type I hypersensitivity and Inflammatory reactions of Hwanggigunjungtang(HGJT). The reasults were obtained as follows: HGJT(0.1. 0.5. 1, 2mg/g) concentration of dependently inhibited compound48/80 induced anaphylaxis reaction in mice. HGJT(2mg/g) also inhibited permeability of evans blue into peritoneal cavity in mice. HGJT reduced IgE, CRP. WBC and Platelets on egg albumin induced hypersensitivity. But serum NO was grown. According to above results, HGJT may be beneficial in the type I hypersensitivity and Inflammatory reactions by inhibition of histamine release from mast cells.

In vivo ESR measurement of free radical reaction in living mice

  • Han, Jin-Yi;Hideo Utsumi
    • 한국응용약물학회:학술대회논문집
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    • 한국응용약물학회 2000년도 춘계학술대회
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    • pp.6-7
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    • 2000
  • Recently, free radicals such as active oxygen species, nitric oxide, etc are believed to be one of the key substances in physiological and pathological, toxicological phenomena, and oxidative damages, and all organism have defencing system against such as free radicals. Formation and extinction of free radicals may be regulated through bio-redox system, in which various enzymes and compounds should be involved in very complicated manner. Thus, direct and non-invasive measurement of in vivo free radical reactions with living animals must be essential to understand the role of free radicals in pathophysiological phenomena. Electron spin resonance spectroscopy (ESR) is very selective and sensitive technique to detect free radicals, but a conventional ESR spectrometer has large detect in application to living animals, since high frequent microwave is absorbed with water, resulting in generation of high fever in living body. In order to estimate in vivo free radical reactions in living whole animals, we develop in vivo ESR-CT technique using nitroxide radicals as spin probes. Nitroxide radicals and their reduced forms, hydroxylamines, are known to interact with various redox systems. We found that! ! the signal decay due to reduction of nitroxyl radicals is influenced by aging, inspired oxygen concentration, ischemia-referfusion injury, radiation, etc. In the present paper, I will introduce in vivo ESR technique and my laboratory recent results concerning non-invasive evaluation of free radical reactions in living mice.

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CoA Transferase and Malonyl-CoA Decarboxylase Activity of Malonate Decarboxylase from Acinetobacter calcoaceticus

  • Byun, Hye-Sin;Kim, Yu-Sam
    • BMB Reports
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    • 제30권4호
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    • pp.246-252
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    • 1997
  • Malonate decarboxylase from Acinetobacter calcoaceticus is shown to have malonyl-CoA: acetate CoA transferase. acetyl-CoA: malonate CoA transferase, and malonyl-CoA decarboxylase activity. These enzyme activities were elucidated by isotope exchange reactions. The enzyme modified by N-ethylmaleimide completely lost its malonate decarboxylase activity, whereas it still kept CoA transferases and malonyl-CoA decarboxylase activities. The existence of CoA transferases and malonyl-CoA decarboxylase activity is clear, but their physiological significance is obscure. The catalytic reactions for two eoA transfers and malonyl-CoA decarboxylation proceed via a cyclic mechanism, which is through two covalent intermediates, enzyme-Smalonyl and enzyme-S-acetyL proposed for malonate decarboxylation of the enzyme.

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