RATIONALE The serotonergic and cholinergic systems are jointly involved in regulating sleep but this system is theorized to be disturbed in depressed individuals. We previously reported that cholinergic and serotonergic agents induce sleep changes partially consistent with monoamine models of sleep disturbances in depression. One potential cause of disturbed neurotransmission is genetic predisp...

a r t i c l e i n f o Although some research has shown a negative relation between Facebook use and academic performance, more recent research suggests that this relation is likely mitigated by multitasking. This study examined the time students at different class ranks spent on Facebook, the time they spent multitasking with Facebook, as well as the activities they engaged in on the site (N = ...

The role of raphe nucleus (R.N) and serotonin in some behaviors such as sleep, cognition, mood, and memory has previously been reported. The median raphe (MR) nucleus is a major serotonin-containing cell group within the brainstem and is one of the main sources of projections to the septum and hippocampus. The hippocampus is widely believed to be essential for context-conditioning learning. Mor...

Background: Myopia has different prevalence rate worldwide and there is controversial points about its environmental risk factors. The prevalence of myopia in medical interns atShirazMedicalSchool and its probable risk factors were studied. Method: In this retrospective cross-sectional study, three hundred interns (7th-year medical students) at Shiraz University of Medical Sciences were examine...

casing material or soil (casing) is used in mushroom (agaricus bisporus) culture to cover a nutritional composted substrate colonised with mycelium, and has an essential function in stimulating and promoting the development of sporophores (fruit bodies). in order to use the agricultural by products (different wastes) to reduce peat consumption of casing soil in button mushroom production, an ex...

Introduction. This descriptive study was done in lorestan university of medical sciences with the aim to determine viewpoints of university students about factors related to suitable time spent or time management . Methods. A valid and reliable questionnaire was given to the 100 university students which had been chosen randomly. Results. Ctor of students' suitable time management was c...

objective(s): due to the prevalence and pervasiveness of stress in modern life and exposure to both chronic and acute stresses, it is not clear whether prior exposure to chronic stress can influence the impairing effects of acute stress on memory retrieval. this issue was tested in this study. materials and methods: adult male wistar rats were randomly assigned to the following groups: control,...