early life stress during fetal development has been hypothesized to predispose several neurological and psychiatric disorders in adulthood. the purpose of this study was to investigate the effect of maternal stress on the volume of granular cells, total number of dark neurons and also the distribution of glycol-conjugates and changes of terminal sugars in the dentate gyrus. pregnant sprague-daw...

objective: the present study aimed to determine the effect of reminiscence on cognitive status and memory of a sample of elderly people who lived in aged day centers in golestan province, iran. methods: this study was a semi-experimental research. the subjects consisted of 45 elderly people who referred to the aged day centers of golestan province. each four groups of 45 aged subjects (4 groups...

background and aim: research shows that 13-18 percent of the people suffer from tinnitus, almost 5 percent of which, have chronic or bothersome tinnitus. chronic tinnitus may be accompanied by anxiety, depression, insomnia, and impairment in cognitive functions such as memory and attention. the purpose of this study was to compare the verbal auditory memory and divided attention between individ...

introduction: zinc is an essential rare element that plays an important role in synaptic plasticity and modulation of the activity of central nervous system and is involved in learning and memory. increasing zinc intake may protect against conditions associated with zinc deficiency, such as diabetes. some studies have revealed that zinc deficiency in diabetic subjects is due to hogher excretion...

conclusions these results indicated that aqueous extract of lemon verbena (≥ 100 mg/kg) has undesirable effects on memory; however, understanding the underling mechanisms needs further investigation. background lemon verbena (lippia citriodora) has been known to have various pharmacologic activities. objectives lemon verbena leaves are used to make an herbal tea, which is traditionally used for...

two physicians, both grown up in west europe, educated also in this area (supplemented by many visits of the united states), travelled 20 years ago to japan for scientific reasons and they changed thereafter in their mental sight of the world. in a first part, the neurophysiologic basis of sensation from the sensory receptor up to the cerebral cortex (“bottom up”), the mechanisms of building me...

lithium is a drug used for the treatment of bipolar disorder. it has several mechanisms of action, and recently it is shown that lithium can antagonize the 5-ht1b/1d serotonin receptors. sumatriptan is a 5-ht1b/1d receptor agonist used for the treatment of cluster headaches and migraine which might cause memory impairment as a potential side effect. in this study, effects of lithium on sumatrip...

introduction: it is assumed that working memory plays a pivotal role in carrying out all sorts of cognitive functions. the introduction of working memory software has provided researchers with an asset to investigate the differences among individuals which can be attributable to differences in working memory capacity. following the advent of working memory software, there were also other pieces...

an ideal orthodontic force system should exert continuous light force. thus, many efforts have been made to improve the memory characteristics of elastomeric chains. the aim of this study was to compare elastomeric chains (ecs) claimed by their manufacturers to offer high memory with traditional ones according to their force-extension diagrams.in this in-vitro study, ecs were divided into six g...