We compared good sleepers with minimally and highly distressed poor sleepers on three measures of daytime functioning: self-reported fatigue, sleepiness, and cognitive inefficiency. In two samples (194 older adults, 136 college students), we tested the hypotheses that (1) poor sleepers experience more problems with daytime functioning than good sleepers, (2) highly distressed poor sleepers repo...

To investigate the quality of glycaemic control that is achievable in diabetic patients with persistent proteinuria and asymptomatic but declining renal function three matched groups of patients were studied. The first comprised diabetics with proteinuria receiving continuous subcutaneous insulin infusion; the second, diabetics without proteinuria receiving continuous subcutaneous insulin infus...

Nasal congestion, a common symptom related to allergic rhinitis (AR), often is associated with poor sleep quality, leading to decreased learning ability, decreased productivity at work or school, and a reduced quality of life. The release of inflammatory mediators and activation of inflammatory cells results in nasal congestion, causing disrupted sleep and subsequent daytime somnolence. Therefo...

STUDY OBJECTIVES To assess the effect of 200 mg of modafinil compared to placebo on alertness, neurobehavioral performance, and executive function during 4 consecutive simulated night shifts. DESIGN Double-blind, randomized, parallel groups. SETTING Sleep research facility. PARTICIPANTS 32 male and female volunteers between the ages of 18 and 55 years. INTERVENTIONS 200 mg of modafinil ...

OBJECTIVE To evaluate associations between actigraphic sleep patterns, subjective sleep quality, and daytime functioning (ie, sleepiness, symptoms of depression, and delinquency and other conduct problems) in at-risk adolescents. DESIGN Prospective, observational cohort study. SETTING Providence, RI, predominantly home and school and 2 visits to the Brown Center for the Study of Children at...

Introduction Conclusions References

Many of the neuromuscular and thoracic cage disorders are associated with disorders of breathing during sleep. The abnormal mechanics of the chest wall impairs respiratory muscle function and this is compounded if there is underlying muscle weakness. Respiratory abnormalities appear during REM sleep before NREM or wakefulness. Central sleep apnoeas are characteristic, but obstructive apnoeas ar...

The usual answer to the question ‘‘Why is the sky blue?’’ is based only on Rayleigh scattering from the molecules in the atmosphere and makes little mention of the contribution of color vision. We supplement this answer with a quantitative discussion of the role color vision plays in determining the appearance of the daytime sky. The anatomy of the human eye is reviewed, and its response as a f...

Obstructive sleep apnea (OSA) is a common sleep disorder characterized by repetitive episodes of apnea and hypopnea during sleep. The symptoms include excessive daytime sleepiness, non-refreshing sleep, daytime fatigue, and decreased concentration, which may cause marked impairment in social or occupational functioning. In addition, the patients with OSA were shown to have an increased risk of ...