Flickering lights can be uncomfortable to look at and can induce seizures in observers with photosensitive epilepsy. However, the temporal characteristics contributing to these effects are not fully known. In the spatial domain, one identified source of visual discomfort is when images have Fourier amplitude spectra that deviate from the natural (∼1/frequency, 1/f) statistical characteristics o...

background and objectives: sleep is a sign of the greatness of god. in this article sleep is described from quran and modern health sciences. methods: this is a qualitative systematic review. data were gathered from the quran, related islamic narratives and literatures. words that were searched included sleep,sleep stages, subaat, hojoo, ruqood, nu’ass, sinah. results: the results showed that t...

Second, the authors enrolled patients who needed supplemental oxygen during NPPV in minor hypercapnic stable COPD (1.3 ± 1.1). To interpret this hypoxemic condition and the ventilatory modes, it is important to know if there is overlap between obesity hypoventilation and COPD and if this condition shows variations and ventilatory mode influence after 6 weeks [ 5 ; table 1]. There is no clear ex...

background and objective : restless legs syndrome (rls) is a sensorimotor disorder that causes sleep deprivation. rls is characterized by discomfort in the legs and severe desire to move them during sleep. different prevalence rates about rls are reported in iran. this systematic review and meta-analysis was performed to estimate the prevalence of rls in iran. materials and methods : by searchi...

The effects of sleep loss and sleepiness encompass a variety substantial costs to society; the direct economic costs owing of neurobehavioral and physiologic alterations. This chapter to insomnia are estimated at $13.9 billion (2). The etiology reviews the causes, consequences, and mechanisms of sleep of these symptoms has not been clearly delineated, however. disruption and concomitant daytime...