• 정신신체의학
• /
• 제18권1호
• /
• pp.30-39
• /
• 2010

연구목적 : 임상현장에서 주로 환자나 간호사의 주관적인 수면보고에 의존하여 수면을 평가하고 있다. 본 연구에서는 주관적 수면평가와 활동기록을 이용한 수면평가를 비교하고자 한다. 방 법 : 32명의 정신과 입원 환자를 대상으로 하였고, 대상자들에게 활동기록기를 이용한 수면평가, 수면일지, 주관적인 수면의 질에 대한 시각적 증상 정도 평가, BDI, STAI를 시행하였다. 간호사도 3일 동안 한 시간마다 환자의 수면을 평가하였다. 결 과 : 환자의 보고와 활동기록기를 이용한 수면측정상 입면잠복시간에서 유의한 차이를 보였다. 환자는 간호사보다 자고 있음에도 깨어있었다고 더 많이 보고하였다. 주관적 수면평가와 활동기록 수면평가의 차이는 불안, 우울과 상관관계를 보였다. 결 론 : 주관적으로 수면의 질을 낮게 평가하는 환자일수록 활동기록기로 측정한 입면잠복시간과 더 큰 차이를 보였고, 우울, 불안 증상이 심한 환자의 수면보고는 활동기록 측정값과 큰 차이를 보였다. 이런 환자들에게 수면의 질에 대한 질문만으로는 정확한 수면평가가 어려우므로 객관적인 수면평가가 필요하겠다.

• 한국컴퓨터정보학회논문지
• /
• 제22권11호
• /
• pp.17-23
• /
• 2017

In this paper, we implemented a respiration measurement system consisting of piezoelectric sensor, respiration signal processing device, and a viewer on a notebook. We tried an experiment for measuring respiration and detecting sleep apnea syndrome when a subject lay on a bed. We applied the respiration measurement algorithm to sensor data obtained from four subjects. In order to get a good graph shape, data manipulation methods such as moving averages and maximum values were applied. The window size for moving average was chosen as N=70, and the threshold value for each subject was customized. In this case, the proposed system showed 96.0% accuracy. When the maximum value among 90 data was applied instead of moving average, our system achieved 95.1% accuracy. In an experiment for detecting sleep apnea syndrome, the system showed that sleep apnea occurred correctly and calculated the average interval of sleep apnea. While infants or the elderly as well as patients with sleep apnea syndrome are lying down on a bed, our results are also expected to be able to cope with some accidental emergency situation by observing their respiration and detecting sleep apnea.

• Human Ecology Research
• /
• 제62권3호
• /
• pp.585-599
• /
• 2024

The purpose of this study was to explore research trends in sleep from infancy through to adolescence. To achieve this, an examination was conducted of sleep research published in Korea based on the publication year, developmental stages of the study participants, research designs, measurement tools, and research topics. A total of 362 academic journal articles and theses/dissertations published in Korea up until 2023 were selected. In terms of publication year, the first study was conducted in 1967 and the field became more active from 2010 onwards. The age group studied the most was adolescents, with cross-sectional research being the most common study design. Regarding sleep measurement tools, most scales measuring sleep in infants, preschoolers, children, and adolescents were developed abroad, then adapted or validated in Korea, or were modifications of adult scales tailored for specific studies. Lastly, in terms of research topics, the most common focus was the relationship between sleep and developmental characteristics, particularly its effects on emotional development. Based on these results, future research could focus on developing sleep-related intervention programs and measurement tools.

• 융합신호처리학회논문지
• /
• 제20권4호
• /
• pp.212-217
• /
• 2019

본 논문에서 코골이 검출과 호흡 측정이 가능한 수면 관리 베개 시스템에 대해 연구 조사 하였다. 수면 관리 베개 시스템은 4개의 압력센서, 두 개의 마이크로폰, 하나의 베개, 측정 시스템으로 구성되어있다. 베개의 하단부에 설치된 4개의 압력 센서는 호흡 신호를 측정 하는데 사용되고, 베개 중앙 왼쪽과 오른 쪽에 설치된 두 개의 마이크로폰은 코골이 신호만 검출하는데 사용된다. 데이터 수집 장치와 컴퓨터로 구성된 측정 시스템을 사용하여 10명의 젊은 사람들의 코골이 신호와 호흡신호를 측정하였다. 호흡 신호 측정 정확도는 약 98%이였고, 코골이 신호 측정 정확도는 약 97% 이였다. 본 연구에서 수행된 실험 결과들이 수면 관리 베개 시스템이 수면 중 사람의 코골이 신호와 호흡신호를 측정하는데 사용 가능함을 보여 주고 있다.

• 한국멀티미디어학회논문지
• /
• 제21권12호
• /
• pp.1370-1378
• /
• 2018

There is a problem to measure neutral bio-signals during sleep because of inconvenience of attaching lots of sensors. In this study, we measured single electrocardiogram(ECG) signal and analyzed the correlation with sleep. After R-peak detection from ECG signal, we extracted 9 features from time and frequency domain of heart rate variability(HRV). Mean of HRV, RR intervals differing more than 50ms(NN50), and divided by the total number of all RR intervals(pNN50) have significant differences in each sleep stage. Specially, the mean HRV has an average of 87.8% accuracy in classifying sleep and awake status. In the future, the measurement ECG signal minimizes inconvenience of attaching sensors during sleep. Also, it can be substituted for the standard sleep measurement method.

• International Journal of Internet, Broadcasting and Communication
• /
• 제11권4호
• /
• pp.71-75
• /
• 2019

Sleep apnea is a disease that causes various complications, and the polysomnography is expensive and difficult to measure. The purpose of this study is to develop an unrestricted wearable monitoring system so that patients can be examined in a familiar environment. We used a method to detect sleep apnea events and to determine sleep satisfaction by non-constrained method using SpO2 measurement sensor and 3-axis acceleration sensor. Heart rate and SpO2 were measured at the finger using max30100. After acquiring the SpO2 data of the user in real time, the apnea measurement algorithm was used to transmit the number of apnea events of the user to the mobile phone using Bluetooth (HC-06) on the wrist. Using the three-axis acceleration sensor (mpu6050) attached to the upper body, the number of times of tossing and turning during sleep was measured. Based on this data, this algorithm evaluates the patient's tossing and turning during sleep and transmits the data to the mobile phone via Bluetooth. The power source used 9 volts battery to operate Arduino UNO and sensors for portability and stability, and the data received from each sensor can be used to check the various degree between sleep apnea and sleep tossing and turning on the mobile phone. Through thisstudy, we have developed a wearable sleep apnea measurement system that can be easily used at home for the problem of low sleep efficiency of sleep apnea patients.

• 한국통신학회논문지
• /
• 제42권1호
• /
• pp.214-217
• /
• 2017

본 논문에서는 원거리에서의 IR-UWB 레이더 센서기반 수면 효율 측정 알고리즘을 제안한다. IR-UWB 레이더로 수면 중 측정 가능한 호흡수, 심박수, 움직임 등의 생체 지표 중 움직임과 수면 효율과의 관련성을 분석하고, 움직임을 기반으로 한 수면 효율 측정 알고리즘을 제안한다. 이에 대한 타당성 및 성능검증을 위해 실제 병원에서의 수면다원검사 환자 3명에 대하여 본 알고리즘을 적용한 결과 평균 3.9% 이내의 절대오차를 갖는 검출성능을 얻었다.

• 임상간호연구
• /
• 제14권1호
• /
• pp.33-44
• /
• 2008

Purpose: This study was performed to determine the effects of foot reflexology on pain and quality of sleep in patients with terminal cancer. Method: Quai-experimental research design was used. The subjects of this study were consisted of 19 for experimental group and 18 for control group. Visualue Scale(VAS) was used as the measurement tool of pain in this study, Verra & Snyder-Halpern Sleep Scale(VSH) and Visual Analogue Scale(VAS) were used as the measurement tool of perceived quality of sleep. Data were analyzed using statistical methods such as frequency, percent, $x^2$-test, t-test using SPSS WIN 12.0 program. Results: The hypothesis 1 that the experimental group with reflexology has less degree of pain than the control group without reflexology was supported (t=5.41, p<.001). The hypothesis 2 that the experimental group with reflexology has higher degree of VSH Scale than the control group without reflexology was supported(t=2.37, p=.02). The hypothesis 3 that the experimental group with reflexology has the difference among the mean of sleep VAS Scale during the 12 measurement periods was not supported(F=1.63, p=.08), and no significant interactions between group and time. Conclusion: It is considered that reflexology is effective for reducing cancer pain and improving quality of sleep in patients with terminal cancer.

• 대한통합의학회지
• /
• 제10권3호
• /
• pp.185-198
• /
• 2022

Purpose : We conducted a study to propose comparing subjective sleeping states data that was collected through scientifically measuring by using smartwatch and surveys for seafarers. In addition, we conducted a study to provide sleep though analysis of the environmental factors that influence the sleep efficiency of seafarers. Methods : For scientific measurement of seafarers' sleeping states, we measured the sleep hours and sleep efficiency for at least 3 days by using the healthcare function of smartwatches which are wearable devices. As for subjective sleeping states, we collected data on sleep hours and satisfaction rates on the quality of sleep through a survey. Lastly, as for the environmental factors that affect the sleep efficiency which is measured by smartwatches such as physical environment, bedroom space, bedroom furniture, bedding, a survey by self-evaluation method was conducted. Results : There were significant differences in the scientific sleep hours measurement values for all seafarers and the average sleep hours in the subjective survey. There were significant differences in the scientific sleep efficiency measurements of all the seafarers and the sleep satisfaction of the subjective survey, and there was no correlation between the scientific sleep efficiency and the subjective sleep satisfaction of all the seafarers. Among the environmental factors affecting the sleep efficiency of the seafarers, humidity variable had the most influence, and vibration and illuminance variables were also shown to have a very significant effect. Conclusion : We propose the measuring method that can analyze the quantitative and qualitative sleep states of the seafarers by using small activity recorders. In addition, it is very important to control humidity, vibration, and illuminance among ship environmental factors, and comfort, noise and bedroom size should also be reflected.

• 한국콘텐츠학회논문지
• /
• 제21권2호
• /
• pp.140-147
• /
• 2021

다양한 수면검사에서 수면단계를 정확히 판단하기 위해 뇌파를 측정한다. 일반적으로 측정은 센서 채널의 개수가 늘어날수록 정확도가 높아지지만, 뇌파는 측정할 때 피부에 전극을 부착하여 수면을 방해하는 요소로 작용한다. 일상생활에서 자가 수면케어를 할 때는 사용자의 불편함과 측정데이터의 정확도를 모두 고려한 최소한의 뇌파 채널 개수를 선택할 필요가 있다. 따라서 본 논문에서는 1개의 채널부터 4개의 채널에 대한 수면단계 분석 모델을 제작하여 1채널은 82.28%, 2채널은 85.77%, 3채널은 80.33%, 4채널은 68.87%의 정확도를 확인했다. 본 연구 결과는 측정 부위가 제한적이라는 한계가 있지만, 채널 개수에 따른 정확도를 비교하여 뇌파 기반 수면분석에서 채널 개수 선정에 대한 정보를 제공한다.