Introduction: Kisspeptin-13 (KP-13) is a novel endogenous factor, increases synaptic transmission and is involved in several behavioral functions such as anxiety, locomotion, epilepsy and avoidance learning. However, the role of this peptide on cognition has not been well clarified yet. Here we studied the effect of kisspeptin-13 pretreatment on spatial learning and also interaction with cholin...

　Introduction: Previous studies have suggested that the cerebellum is a primary site of motor learning. The cerebellar cortex has a particular glial architecture with large astroglial cells. In addition, more recent works have revealed that astrocytes play a more active role in neuronal activity. The aim of this study was to evaluate the number of astrocytes in the molecular layer of rat's cere...

Introduction: Alzheimer disease is a progressive and irreversible neuropsychiatric disorder. Melissa Officinalis improves anxiety and clinical dementia symptoms caused by AD therefore, the purpose of the present study was to evaluate the effect of Mellisa extract on spatial memory deficit induced by STZ in MWM examination of male wistar rats. Methods: In the present study, 112 male wista...

androgens have been shown to affect cognitive aspects of spatial memory. testosterone which is the most important androgen, plays a role in the organization of behavior during development. also, it has been shown that androgens cause sex related differences in learning and memory especially during neonatal period. in the current study, we assessed the effects of castration and testosterone enan...

Previous studies have shown that caffeine has beneficial effects on cognitive impairment in sleep deprived male rats. Therefore in the present study, we examined the effects of chronic caffeine administration on learning and memory impairments induced by sleep deprivation (SD) in the intact and ovarectomized (OVX) female rats. Two sets of animals including intact and OVX were randomly recruited...