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This study aimed to investigate the relationship between measures of clinical symptom severity and sleep EEG parameters in a relatively diagnostically homogeneous group of patients with schizophrenia. We obtained sleep EEG data in 15 drug-free inpatients who met DSM-IV-R criteria for schizophrenia, undifferentiated type, with 15 age- and sex-matched normal(More)
BACKGROUND Frequent electroencephalographic arousals or awakenings associated with periodic leg movements (PLM) might be responsible in part for the complaints of sleep disturbances made by patients treated with antidepressants. Past studies, however, have determined the effects of only certain limited antidepressants, generally in small numbers of(More)
INTRODUCTION As children go through the transition from childhood to adolescence, many shifts occur in sleep/wake patterns related to intrinsic and extrinsic developmental changes. These shifts have been shown to result in corresponding shifts in sleep phase (later sleep onset) and sleep deprivation among teenagers in Western societies. However, the effect(More)
OBJECTIVE To investigate the psychiatric symptomatology and personality characteristics of Korean senior high school students considered to use the Internet to excess. METHOD We administered a questionnaire packet to students that included 4 measures. These measures included a questionnaire on Internet use patterns during the previous month, the Internet(More)
This study was an attempt to evaluate the present profile of parent-child cosleeping, to investigate the characteristics of those children who cosleep with their parents, and to determine the factors influencing cosleeping in Korea. Observed subjects consisted of 427 young Korean children aged 12 to 84 months. We used an interview method. The incidence of(More)
The termination of obstructive respiratory events is typically associated with arousal from sleep. The ventilatory response to arousal may be an important determinant of subsequent respiratory stability/instability and therefore may be involved in perpetuating obstructive respiratory events. In healthy subjects arousal is associated with brief(More)
STUDY OBJECTIVE This study compares the heart rate responses to the termination of respiratory events, both with and without associated leg movements. METHODS Heart rate was measured for 15 R-R intervals before (T-15 to T-1) and after (T+1 to T+15) the termination of respiratory events as a change from the baseline rate, defined as the average of 10 R-R(More)
STUDY OBJECTIVES The aim of this study was to describe the clinical and polysomnographic characteristics of patients with high frequency leg movements (HFLM) on polysomnographic recording. METHODS Among 486 patients (male 232, female 254) referred for overnight diagnostic PSG over a 9-month period, 37 patients demonstrated HFLM: 19 males (8.2% of PSGs)(More)
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