نتایج جستجو برای: brain model
تعداد نتایج: 2514126 فیلتر نتایج به سال:
conclusions the most effected parts in asd are lateral connections of hmasd. two-sided connections which are completely symmetric become more active, and cause extra synchronization. on the other hand, due to special characteristic of two-sided connections and their ability to simulate the same phased dynamics, they cause unnatural asymmetry in children’s eeg signal. these results are consisten...
multiple sclerosis (ms) is a neurodegenerative and autoimmune disease that it’s molecular etiology and factors involving in its progression remains unknown. in this study for evaluation effect of mercuric on progression of ms we investigated the additive effect of mercuric sulfide on the brain mitochondrial dysfunction in experimental autoimmune encephalomyelitis (eae) model of ms in c57bl/6 mi...
this study was designed to develop a modified tbi weight drop model for induction of focal mild cerebral injury. a stereotaxic coupled weight drop device was designed. principle arm of device carries up to 500g weights which their force was conveyed to animal skull through a thin nail like metal tip. to determine the optimal configuration of the device to induce mild tbi, six different trials w...
there are only a few, non-evidence based, neuroprotective strategies for treatment and prevention of brain injuries after closed head trauma. to establish new therapy strategies, a novel animal model is needed. the aim of our investigation was to link standardized small animal models and actual patient medical care. data of experimental small animal studies often cannot be transferred to cns in...
Background: Brain hypothermia by reducing the temperature of the cerebrospinal fluid is done by a cooling pad in the thoracic region and protect brain from the ischemic injuries. Along with the spinal cord, the brain is an essential partner in the central nervous system, and similarly, it is surrounded and protected from the bony skull and from shock by cerebrospinal fluid. The brain analyzes i...
brain injury has a multiple pathophysiology for which there is no definite treatment. in this regard, tissue engineering is one of the probable strategies for repair of damaged tissue. but creating a proper model for testing the engineered products faced some difficulties, specially, when we want to evaluate the effects of a product on the volume of injury. the current brain injury methods coul...
Today, neuroscientists are interested in discovering human brain functions through brain networks. In this regard, the evaluation of dynamic changes in functional connectivity of the brain regions by using functional magnetic resonance imaging data has attracted their attention. In this paper, we focus on two model-based approaches, called the exponential weighted moving average model and the d...
over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...
background traumatic brain injury (tbi) is an important public health problem throughout the world. objective this study assesses repeated glasgow coma scale (gcs) scores to predict the severity of tbi and survival of the patients. materials and methods a sample of 239 patients who were hospitalized with traumatic brain injury was selected by random sampling from icu wards at shahid beheshti ho...
Background: Numerous studies have shown the protective effects of saffron against oxidative damage in a global model of cerebral ischemia, but its effects on brain edema and oxidative ischemic injury in focal ischemic stroke are not completely understood. Therefore, this study was designed to investigate the effects of saffron on brain edema, infarct volume, antioxidant enzyme activity (glutath...
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