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A case of ROHHAD (rapid-onset obesity with hypothalamic dysregulation, hypoventilation, and autonomic dysregulation) syndrome in an 11-year-old girl

Shin S, Kim SK, Jung HI, Cho SY, Kim J, Joo EY, Ahn K, Lee BR

Rapid-onset obesity with hypoventilation, hypothalamic, and autonomic dysregulation (ROHHAD) syndrome is a rare disease characterized by rapid progression of obesity and central hypoventilation with autonomic and endocrine dysregulation. There is...
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Comparison of Sleep Duration, Social Jetlag, and Subjective Sleep Disturbance in Rotating Shift Nurses According to the Chronotype

Choi SJ, Joo EY, Kim KS

Purpose: The purpose of this study was to investigate the sleep duration, social jetlag (SJL), and subjective sleep disturbance according to the individual chronotype in rotating shift nurses. Methods: A...
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Effects of Organic Light-Emitting Diodes on Circadian Rhythm and Sleep

Jo H, Park HR, Choi SJ, Lee SY, Kim SJ, Joo EY

Objective Organic light-emitting diodes (OLEDs) emit less blue light than traditional light-emitting diodes (LEDs), and we previously found that early-night OLED light exposure (LE) delays the melatonin phase by less...
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Tectal glioma presenting with adult-onset epileptic seizures

Kim JH, Jo H, Choi JW, Joo EY

Tectal glioma is an indolent and benign tumor that occurs predominantly in the pediatric population. It arises in the tectum of the midbrain and, due to its location, contributes to...
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Effect of Light Emitted by Smartphones at Bedtime on Circadian Rhythm and Sleep: Is It Different between Day Worker and Shift Worker?

Kim D, Jo H, Choi SJ, Joo EY

Objectives: Light at night (LAN) can suppress melatonin secretion and thus disturb normal sleep. The aim of this study was to investigate how the illumination of a smartphone at bedtime...
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Sex Differences in Obstructive Sleep Apnea by Bioelectrical Impedance Analysis

Kim JR, Song P, Joo EY

Background and Purpose Obesity is known of one of the risk factors for obstructive sleep apnea (OSA). Although body mass index (BMI) can be an indicator for obesity, it does...
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A Sensitive and Specific Liquid ChromatographyTandem Mass Spectrometry Assay for Simultaneous Quantification of Salivary Melatonin and Cortisol: Development and Comparison With Immunoassays

Shin S, Oh H, Park HR, Joo EY, Lee SY

Melatonin and cortisol are clinically important for diagnosing sleep and mood disorders. We developed and validated a liquid chromatography-tandem mass spectrometry (LC-MS/ MS) assay for simultaneous measurement of salivary melatonin and...
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Effect of Social Jetlag on Sleep and Respiratory Disturbance in Young Patients with Obstructive Sleep Apnea Syndrome

Jo H, Jang E, Choi SJ, Suh S, Joo EY

Objectives: Circadian misalignment may increase the risk of obesity and related obstructive sleep apnea (OSA). Considerable young adults have social jetlag (SJL), which is defined as the time discrepancy between...
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Test-Retest Reliability of Multiple Sleep Latency Test in Diagnosis of Narcolepsy

Seong MJ, Choi SJ, Hong SB, Joo EY

Objectives: The diagnosis of hypersomnia may be changed by the repeated multiple sleep latency test (MSLT). We investigated the long-term reliability of MSLT in the diagnosis of narcolepsy type 1(NT1)...
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Relationship of Sleep Quality and Cognitive Function in Patients with Mild Cognitive Impairment and Subjective Memory Impairment

Lee HR, Choi SJ, Chin J, Joo EY

Objectives: To investigate the relationship between subjective sleep quality and cognitive function in patients with subjective memory impairment (SMI), a self-perceived cognitive decline without objective cognitive impairment, and amnestic mild...
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The Mediating Effect of Depression in the Relationship between Sleep Misperception and Insomnia Severity among Insomnia Patients

Lee J, Joo EY, Choi SJ, Suh S

Objectives: Sleep misperception is the underestimation of perceived total sleep time compared to actual total sleep time. It is observed in approximately 50% of patients with insomnia. Insomnia patients with...
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Sex Differences in Etiologies of Sleep Disorders

Choi SJ, Kim D, Hwang Y, Jo H, Joo EY

Objectives: To investigate the etiologies of sleep disorders according to sex. Methods: We enrolled 1,270 patients who complained of insomnia (n=328) or sleep apnea (n=942) for more than 6 months and...
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Identification of Sleep Apnea Severity Based on Deep Learning from a Short-term Normal ECG

Urtnasan E, Park JU, Joo EY, Lee KJ

Background: This paper proposes a novel method for automatically identifying sleep apnea (SA) severity based on deep learning from a short-term normal electrocardiography (ECG) signal. Methods: A convolutional neural network (CNN)...
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Effects of Evening Exposure to Light from Organic Light-Emitting Diodes on Melatonin and Sleep

Park HR, Choi SJ, Jo H, Cho JW, Joo EY

Background and Purpose: Organic light-emitting diodes (OLEDs) emit less blue light than traditional light-emitting diodes (LEDs), but the effects of OLED light exposure (LE) on melatonin and sleep have not...
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Sleep and Nocturia in Under Age 50 Male Patients with Obstructive Sleep Apnea Syndrome

Chung YH, Choi SJ, Kim JR, Park J, Joo EY

Objectives: To investigate the prevalence of nocturia in young patients with obstructive sleep apnea syndrome (OSAS) and to find out the risk factors of nocturia in the patients. Methods: We enrolled...
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Effect of Sleep Quality on Headache-Related Impact in Primary Headache Disorders

Cho S, Lee MJ, Park HR, Kim S, Joo EY, Chung CS

Background and Purpose Sleep disturbance is common in patients with primary headache disorders. We were interest in whether poor sleep quality affects patients directly or via increases in the frequency and...
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Insomnia Symptoms and Mood Disturbances in Shift Workers with Different Chronotypes and Working Schedules

Choi SJ, Song P, Suh S, Joo EY, Lee SI

BACKGROUND AND PURPOSE: Shift workers frequently suffer from insomnia and mood disturbances, but little is known about the relationships of these conditions with the chronotypes and different working schedules of...
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Altered Regional Cerebral Blood Flow Associated with Mood and Sleep in Shift Workers: Cerebral Perfusion Magnetic Resonance Imaging Study

Park YK, Kim JH, Choi SJ, Kim ST, Joo EY

BACKGROUND AND PURPOSE: Shift work disrupts the body's circadian rhythms and increases the risk of health problems. Despite evidence of neuropsychological disturbances in shift workers (SW), the brain functional status...
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A Case Study of Imagery Rehearsal Therapy in a Nightmare Disorder Patient with Posttraumatic Stress Disorder

Park S, Choi SJ, Joo EY, Suh S

Nightmares are vivid, unpleasant dreams that result in awakening during sleep. According to previous studies, the prevalence of nightmare disorder is 2–5% of the general population and is associated with...
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Effects of Light on Daytime Sleep in 12 Hours Night Shift Workers: A Field Study

Choi SJ, Park HR, Joo EY

OBJECTIVES: Night shift workers suffer from sleep and daytime disturbances due to circadian misalignment. To investigate the role of environmental light in daytime sleep following 12 h-night shift work. METHODS: We...
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