• 수면정신생리
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• 제5권1호
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• pp.12-17
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• 1998

Circadian rhythms in subjective alertness, mood, and performance can be classified as psychological rhythm, compared with physiological rhythm such as body temperature and hormonal change. While in normal condition entrained by 24hr zeitgeber, subjective alertness would reach its maximum value around midday, subjective alertness would parallel body temperature rhythm with its peak at evening in non-entrained, free-running state. With desynchronization technique, subjective alertness rhythm is thought to be controlled by both temperature and sleep-wake rhythm oscillator. Circadian performance rhythms depend on the kind of task tested. It shows parallelism with body temperature rhythm when subjects are tested with simple, repetitive task. But when tested with tasks requiring complex verbal reasoning or immediate memory, subjects would perform them best at early morning, with performance decreasing as time of day advances. The desynchronization technique shows that circadian performance rhythm of simple, repetitive task is dependent on temperature oscillator but circadian performance rhythm of complex verbal reasoning is influenced by both temperature and sleep-wake rhythm oscillator or another independent oscillator. It would be worthwhile to compare psychological rhythm with hormonal change such as cortisol and melatonin. And more simple and time-saving method than desynchronization technique may facilitate the study of the mechanism underlying psychological rhythm.

• 수면정신생리
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• 제5권1호
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• pp.1-11
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• 1998

Chronobiology is the area of medicine that is, how time-related event shape our daily biologic responses and apply to any aspect of medicine with regard to altering pathophysiology and treatment response. In mammals, there are several evidences that prove suprachiasmatic nuclei(SCN) is the major circadian pacemaker and the circadian rhythm influences so many biological aspects of an living organism such as rest-activity, thermoregulation, reproduction, and endocrine system. In case of human beings, there had been little information of circadian system. That may be due to the experimental, technical difficulties to study but also to the fact that human has the more complex environments that may alter the circadina rhythm like the artificial light, many socio-cultural aspects and so forth. However, several reports of these days indicate human's circadian system is composed of two or more circadian oscillators and SCN is the major circadian oscillator among them like the other mammals. Free-running circadinan period of mankind is about 24 hours rather than about 25 hours, and rest-activity rhythm is polymodal like other species. In addition to that, human may have capcities to change the circadian rhythm as the seasonal changes of daynight schedule. In this article, the author will summarize recent progress of anatomy and physiology of the circadian clock mechanism in humans.

• 동의신경정신과학회지
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• 제16권1호
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• pp.143-157
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• 2005

Objective : It is a presentation of theoretical, clinical. historical foundation about using biofeedback in oriental medicine. Methods : We generalize definition, explanation, history and clinical application of biofeedback and study community with and clinical practice in oriental medical theory, referring to The neurofeedback book-An introduction to Basic Concepts in Applied Psychophysiology published by Michacl Thompson & Lynda Thompson Results : We acquire possibilities of application in oriental medicine as follows. 1. It is a view of treatment for the whole man not separating body and mind. 2. It make much of yin-ping-yang-bi(陰平陽秘) and spontaneous cure in the human body. 3. It make much of a curer's mental condition through dao(道). 4. It make much of a breathing corresponding to nature. 5. We make use of it in diagnosis and evaluation of disease. 6. It is psychologic treatment of self-leading. Conclusions : Biofeedback is expected that usefully applied to oriental psychotherapy of Kyungja-pyungji therapy(驚者平之療法). Oh-Ji-Sang-Seung therapy(五志相勝療法), Qigong therapy(氣功療法), Autogenic relaxation Training(自律弛緩療法) basing on oriental medical theory not separating body and mind.

• 수면정신생리
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• 제25권2호
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• pp.92-95
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• 2018

Catathrenia가 환자에게 어떠한 신체적 문제를 유발하며 장기간 지속되는 경우에는 어떠한 합병증을 유발하는지, 자연 경과는 어떻게 되는지 등 예후 관련해서도 아직까지 구체적으로 확인된 바는 없다. 이와 같은 많은 의학적 궁금증들이 해소되기 위해서는 매우 드문 질환이긴 하지만 향후 지속적인 문헌 수집을 통한 질환 분석과 함께 전향적 연구가 필요할 것으로 사료된다.

• 수면정신생리
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• 제29권2호
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• pp.40-44
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• 2022

Bipolar disorders are a group of mood disorders characterised by relapsing mood episodes throughout the course of illness. Patients with bipolar disorders commonly present with various sleep problems. Patients in a manic episode generally show decreased need of sleep and those in a depressed episode frequently complain about hypersomnia. Current literature even points to evidence that patients with bipolar disorder in euthymic state may still show signs of sleep disturbances when compared to the general population. Clinicians may also note intricate interactions between changes of circadian rhythm and evolution of mood episodes in patients with bipolar disorder. Also, commonly prescribed medications which plays a crucial role in treatment of bipolar disorders including mood stabilisers and antipsychotic medications often cause significant weight gain over time. Being a risk factor of sleep apnoea, weight gain can predispose the patient to develop sleep apnoea. In this narrative review, we summarised current evidence and literature regarding characteristics of circadian rhythm and comorbid sleep apnoea in patients with bipolar disorder. We also present literature regarding implications of circadian disturbance and comorbid sleep apnoea in managing patients with bipolar disorder.

• 수면정신생리
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• 제11권2호
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• pp.106-109
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• 2004

소아의 폐쇄성 수면 무호흡증은 흔히 편도 아데노이드 비대증으로 인해 발생하는 것으로 알려져 있으나 비만, 두개 악안면 기형 등 다양한 원인에 의해서도 발생할 수 있다. 소아의 폐쇄성 수면 무호흡증은 야뇨증, 사건 수면, 행동 장애 등과 같은 다양한 합병증을 동반할 수 있다. 그 원인이 편도 아데노이드 비대증이면 수술적인 제거를 통해 증상 호전을 기대할 수 있으나 비만 등 다른 원인에 의한 것이라면 지속성 상기도양압술과 체중 감량 및 생활습관 변화를 통한 치료가 필요하다. 저자들은 편도 아데노이드 절제술 시행 후에도 심한 폐쇄성 수면 무호흡증이 지속되고 다양한 합병증이 나타난 환아에서 상기도양압술로 무호흡 관련 증상 및 동반된 합병증의 호전을 보인 1례를 경험하였기에 보고한다.

• 수면정신생리
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• 제24권1호
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• pp.19-23
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• 2017

Obstructive sleep apnea is a common disorder in which respiratory flow decreases or disappears despite respiratory effort due to occlusion of the upper respiratory tract during sleep. Oxidative stress and systemic inflammatory reaction induced by the obstruction cause complications such as hypertension, coronary artery disease, and diabetes and increase cancer incidence. Furthermore, in patients with interstitial lung disease, obstructive sleep apnea has a very high prevalence and is thought to have a close pathophysiological and clinical correlation. In other words, obstructive sleep apnea could be the cause or a complication of interstitial lung disease ; when these two afflictions coexist, the prognosis of the patient is worse. In patients with interstitial lung disease with obstructive sleep apnea, CPAP treatment significantly improved sleep and quality of life, as well as improved morbidity and mortality in a recent study. Therefore, early diagnosis and treatment of obstructive sleep apnea in patients with interstitial lung disease are very important, and additional studies designed to include patients with idiopathic pulmonary fibrosis as well as patients with advanced interstitial lung disease should be performed.

• 수면정신생리
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• 제9권1호
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• pp.56-60
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• 2002

목 적 : 긴장성 두통은 병태생리가 아직 명확하게 밝혀지지 않았지만, 심리적인 요소가 중요한 역할을 하는 통증 증후군의 하나로 알려져 있다. 두통과 관련된 심리적 요소 중의 하나가 alexithymia이다. 본 연구에서는 긴장성 두통 환자에서의 alexithymia 정도를 정상대조군과 비교하였으며 우울정도와, alexithymia와의 연관성을 분석하였다. 방 법 : 만 18세 이상의 긴장성 두통 환자 66명을 대상으로, alexithymia의 정도와 우울감을 알아보기 위하여 TAS-20K와 BDI를 시행하였다. 정상대조군에서는 TAS-20K를 시행하였다. 결 과 : TAS-20K는 긴장성 두통 환자군에서 정상대조군에 비하여 유의하게 높은 수준을 보였다. 또한 TAS-20K의 점수와 BDI 점수는 유의한 정적인 상관관계를 나타냈다. 결 론 : 긴장성 두통 환자들은 정상대조군에 비하여 높은 alexithymia 수준을 보였다. 또한 Alexithymia의 수준은 우울감과 유의한 연관성을 가진다. 임상의들은 긴장성 두통 환자들의 치료적 접근에서 alexithymia, 우울증과 같은 심리적 요소의 고려가 필요할 것으로 사료된다.

• 수면정신생리
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• 제10권2호
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• pp.108-112
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• 2003

목 적：본 연구는 청각 사건관련 전위를 이용하여 전수면박탈이 인간의 신경생리에 미치는 영향을 알아보고자 시행되었다. 방 법：고려대학교 재학생 중 건강한 자원자 24명을 대상으로 하여 총 38시간의 수면박탈을 시행하였고 2일간 아침, 저녁으로 총 네 차례 청각 사건관련 전위를 실행하였다. 결 과：P300과 N200의 잠복기가 유의하게 길어졌으며(p<0.001) 진폭도 수면박탈의 결과로 유의하게 감소하였다(p<0.05). 수면박탈에 따라서 P200의 진폭이 유의한 증가를 보였다. 그러나 N100에서는 수면박탈에 따라서 유의한 변화가 나타나지 않았다(p<0.05). 결 론：청각 사건관련전위중 P300과 N200가 수면박탈 상태를 반영하는 표지자로 생각된다. 향후 수면박탈이 사건 관련전위에 미치는 영향의 신경생리학적 기전에 관한 추가적인 연구가 필요할 것으로 생각된다.

• 한국음향학회:학술대회논문집
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• 한국음향학회 1999년도 학술발표대회 논문집 제18권 1호
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• pp.269-273
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• 1999

Combination of mental stress task with noise background is a traditional tool employed in psychophysiology. However, intensity of background noise is a factor affecting both performance on test and psychophysiological responses associated with stress evoked by mental load in noisy environment. In the current study on 7 subjects we analyzed the influence of white noise (WN) intensity (55, 70, and 85 dB[A] ) on psychophysiological responses during word recognition test performed on noise background. There were recorded following physiological variables: electrodermal activity (EDA) , namely, skin conductance level (SCL), skin conductance response (SCR) amplitude (SCR-A), rise time and total number of SCRs (N-SCR); cardiovascular activity, e.g., heart rate (HR), respiratory sinus arrhythmia (RSA) index, pulse transit time (PTT), finger pulse volume (PV), skin temperature (SKT) and respiratory activity, such as respiration rate (RESP-R) and inspiration wane amplitude (RESP-A) during baseline resting state and 40 s long performance on 3 similar Korean word recognition tests with different WN intensity (55, 70, and 85 dB). Electrodermal responses (SCR-A, SCL, N-SCR) demonstrated gradual increment with increased intensity of noise, and this increase of response magnitude with higher intensity of noise was typical also for r skin temperature (phasic SKT decrease) and pulse volume (phasic and tonic PV decrease). However, some cardiovascular and respiratory responses did not exhibit same tendency of gradual increase of reactivity , namely HR, as well as RESP-R and RESP-A showed decrement of response magnitudes. Important finding in terms of cardiovascular reactivity was that 55 and 70dB evoked similar profiles, while 85dB WN resulted in significantly different profile of reactions, suggesting that there exists a threshold level after which intensive auditory stimulation elicits psychophyslological responses pattern of different quality. There are discussed potential autonomic mechanism involved in mediation of observed physiological responses.