The Brain Prize 2011: From Microcircuit Organization to Constellations of Brain Rhythms.

Changes of the brain’s bioelectrical activity in cognition, consciousness, and some mental disorders

Background: An electroencephalogram (EEG) is an accepted method in neurophysiology with a wide application. Different types of brain rhythms indicate that simultaneous activity of the brain cortex neurons depend on the person’s mental state. Method: we have focus on reviewing the existing literature pertaining to changes of the brain’s bioelectrical activity that recorded from the ...

The Effects of L-arginine on the Hippocampus of Male Rat Fetuses under Maternal Stress

Introduction: Prenatal stress has deleterious effects on the development of the brain and is associated with behavioral and psychosocial problems in childhood and adulthood. This study aimed to determine the protective effect of L-arginine on fetal brain under maternal stress. Methods: Twenty pregnant Wistar rats (weighting 200-230 g) were randomly divided into 4 groups (n=5 for each group). T...

Effect of an Antagonist of Vasoactive Intestinal Polypeptide on Biological Rhythm of Rest Activity in the Rat

Abstract Vasoactive Intestinal Polypeptide (VIP), has been found in different neurotransmitter systems and exists in various nerve tracts in the brain. Potential role of this peptide in physiological processes such as regulation of sleep and wakefulness, and biological rhythms has been confirmed in several reports. In the present research effects of intracerebroventricular (ICV) injection of a...

An Investigation Of Brain Drain From Iran To OECD Countries Based On Gravity Model

Effect of Ethnicity on the Females’ Brain Weight in Northern Iran

Introduction: Brain weight and cranial capacity are important parameters in the study of racial/ ethnic differences. This study was done to determine the effect of ethnicity on the female’s brain weight in Northern Iran. Methods: Brain weight was estimated using linear (Lee–Pearson’s) formula in 410 normal 17–20 year old (207 native Fars and 203 Turkman) females in northern Iran. Dimension...