Abstract Introduction Sleep is important for learning and memory retention. However, students often cram examinations by staying awake late to study. We tested the hypothesis that trading sleep time leads better next-day recall, but items learned during deprivation will be more poorly retained. Methods Seventy healthy adults (18–24 years; 32 males) participated in an overnight laboratory study ...

OBJECTIVE The evidence for the efficacy of D-cycloserine (DCS) for augmenting cognitive behavioral therapy (CBT) for anxiety disorders has been mixed. Guided by preclinical research and initial findings from a small-scale study involving humans, we tested the hypothesis that DCS enhancement of exposure therapy would be specific to successful exposure sessions. METHOD Medication-free adults wi...

Intervention: The intervention consisted of five weeks of daily sessions of light treatment in the participant’s home. Participants were advised to complete their session before 10:00 each morning, sitting at a distance of 40 cm with the head directed towards the light. The treatment sessions lasted for one hour a day (intensity: 10000 lux at 40 cm) while the placebo involved dim red light for ...

antioxidant effect of olive leaf extract (ole) was studied on motility, viability, plasma membrane integrity of spermatozoa and malondialdehyde production in 12 ross 308 roosters at their 30 weeks of age. semen samples were collected by abdominal massage in 5 times. in each session after the initial sperm assessment, collected samples were pooled and diluted with sexton extender.samples were sp...

Prior reports have described the limitations of quantifying internal training loads using hear rate (HR)-based objective methods such as the training impulse (TRIMP) method, especially when high-intensity interval exercises are performed. A weakness of the TRIMP method is that it does not discriminate between exercise and rest periods, expressing both states into a single mean intensity value t...

OBJECTIVE The present study aimed to test whether exposure to radiofrequency electromagnetic fields (RF-EMF) emitted by mobile phone base stations may have effects on salivary alpha-amylase, immunoglobulin A (IgA), and cortisol levels. METHODS Fifty seven participants were randomly allocated to one of three different experimental scenarios (22 participants to scenario 1, 26 to scenario 2, and...

BACKGROUND Untrained fingertip palpation has been shown to be unable to adjust endotracheal tube (ET) cuff pressure in most intubated patients. OBJECTIVE We determined the impact of a training course of ETT cuff adjustment by palpation in attaining a safe cuff inflation pressure. PATIENTS AND METHODS Twenty-five nurses were asked to adjust the ETT cuff pressure to 25 cmH2O by palpation on t...

background: local ethical committees in medical sciences in iran were established in 1999 in order to assess and evaluate the observance of ethical standards throughout the universities and research centers. the purpose of this study is to analyze the situation of local ethical committees in order to develop research ethics guideline. methods: for this cross-sectional study which has been condu...