نتایج جستجو برای: brain activity
تعداد نتایج: 1531326 فیلتر نتایج به سال:
Background: Simultaneous electrocardiographic (ECG) changes are seen in hemorrhagic brain events even in the absence of associated myocardial infarction (MI). This study was designed to assess the role of ECG changes to predict true MI in patients with hemorrhagic brain trauma. Methods: Data of 153 patients with traumatic brain injury and concomitant ECG changes were recorded. Enzyme study w...
As demonstrated by this example fairy-tales long ago expressed what we refer to today as sensitive dependence on initial conditions. If we observe such a sensitive dependency in any given, deterministic system, we will call it 'chaos'. While the classical definition of chaos means absence of order and unpredictability, the scientific definition ofchaos is based on nonlinear mathematics.Although...
The term brain activity refers to a wide range of mental faculties that can be assessed either on anatomical/functional micro-, mesoand macrospatiotemporal scales of observation, or on intertwined levels with mutual interactions. Here we show, based on novel topological findings, how every brain activity encompassed in a given anatomical or functional level necessarily displays a counterpart in...
Pupal diapause in Mimas tiliae can be terminated by keeping the pupa for at least 4 weeks at 3° C. The adult emerges about 15 days after transfer to 25° C. Histological examination shows that the neurosecretory cells in the brain are inactive in the diapausing pupa, but they elaborate intracellular material during the first 3 weeks at 3 C. The material is passed to the corpora cardiaca. The neu...
Background: It is well known that the development of brain oxidative stress is one of the most serious complications of arterial hypertension that evokes brain tissue damage. The aim of this study was to examine the effects of atorvastatin treatment (20 mg/kg/day), as an antioxidant, to prevent the brain tissue oxidative stress in the hypertensive (HTN) rats. Methods: Experiments were performed...
June 2005 | Volume 2 | Issue 6 | e195 | e198 As mothers get older and assisted conception becomes more common in developed countries, the incidence of multiple births—primarily of nonidentical siblings, but also of identical ones—has dramatically increased. Multiple pregnancies are high-risk pregnancies, with preterm delivery and monochorionicity (shared placenta) the major problems. Consequent...
Objective: The present study was carried out to investigate the neuropharmacological activities of ethyl acetate extract of Mimosa pudica (EAMP) leaves on anxiety, depression and memory in a mouse model. Materials and Methods: Anti-anxiety potential of EAMP was evaluated by elevated plus maze (EPM), light-dark box (LDB) and social interaction (SI) tests in mice.Anti-depressant potential of EAMP...
background: it is well known that the development of brain oxidative stress is one of the most serious complications of arterial hypertension that evokes brain tissue damage. the aim of this study was to examine the effects of atorvastatin treatment (20 mg/kg/day), as an antioxidant, to prevent the brain tissue oxidative stress in the hypertensive (htn) rats. methods: experiments were performed...
objective(s) indigofera tinctoria linn. of fabaceae family is claimed to be useful to control epileptic seizures in the indian system of folkore medicine. this study was designed to evaluate i. tinctoria and to verify the claim. materials and methods seizures were induced in male albino rats with pentylenetetrazole (ptz). the test group animals were administered ethanolic extract of indigofera ...
background: the effects of estrogene on central nervous system are still controversial. objective: we aimed to investigate the effects of raloxifene on the antioxidant enzyme [superoxide dismutase (sod) and catalase (cat)] activities and malondialdehyde (mda) levels in brain homogenates of ovariectomized female rats and its effect on cognitive process of learning. materials and methods: female ...
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