نتایج جستجو برای: brain activation

تعداد نتایج: 860866  

Journal: :Biomedicines 2021

A hallmark of the aging brain is robust inflammation mediated by microglial activation. Pathophysiology common neurodegenerative diseases involves oxidative stress and neuroinflammation. Chronic treatment rats ladostigil, a compound with antioxidant anti-inflammatory function, prevented activation learning deficits. In this study, we further investigate effect ladostigil on undifferentiated SH-...

Journal: :Information 2023

Two universal functional principles of Adaptive Resonance Theory simulate the brain code all biological learning and adaptive intelligence. Low level representations multisensory stimuli in their immediate environmental context are formed on basis bottom up activation under control top down matching rules that integrate high long term traces contextual configuration. These coding lead to establ...

Journal: :Ejso 2022

Background: Postoperative delirium (POD) is associated with increased morbidity and mortality rates in older patients. Neuroinflammation, the activation of intrinsic immune system brain, seems to be one mechanisms behind development POD. The aim this study was explore association between perioperative inflammatory response POD a cohort oncological patients need for surgery.

E Tamaddonfard G Vafaye Saiah

Histidine is an amino acid precursor of neuronal histamine. It is evident that peripheral injection of histidine produces effects that resemble to centrally administered histamine. The aim of the present study was to compare the effects of intracerebroventricular (ICV) injection of histamine and inraperitoneal (IP) injection of histidine on food intake in rabbits. ICV injections of histamine (1...

Journal: :international journal of iron & steel society of iran 2010
f. mohseni m. h. abbasi m. panjepour

the effect of mechanical activation on structural changes and kinetics of carbothermic reduction of hematite with graphite was studied in this research. hematite powder mixture with graphite (with stoichiometry ratio c/o=1) was milled for the time periods of zero to 50 hours, and the structural changes were studied using x ray diffraction (xrd). the effect of mechanical activation on the kineti...

Journal: :Journal of neurophysiology 2013
Oliver Hinds Todd W Thompson Satrajit Ghosh Julie J Yoo Susan Whitfield-Gabrieli Christina Triantafyllou John D E Gabrieli

We used real-time functional magnetic resonance imaging (fMRI) to determine which regions of the human brain have a role in vigilance as measured by reaction time (RT) to variably timed stimuli. We first identified brain regions where activation before stimulus presentation predicted RT. Slower RT was preceded by greater activation in the default-mode network, including lateral parietal, precun...

Alzheimer's disease (AD), the most ordinary form of dementia and extracellular accumulation of Amyloid-β (Aβ) in senile plaques, is an important and a main event in the pathogenesis of AD. Deposition of Aβ Peptide initiates a spectrum of cellular responses that are interposed by the resident neuroimmune cells of the brain, the microglia. Recently, a novel inflammasome signaling&n...

Melika Ariaei, Mohammad Ali Emrani,

Alzheimer disease (AD), the most common cause of dementia, is an irreversible progressive neurodegenerative condition. It is characterized by the salient inflammatory features, microglial activation and increased levels of pro-inflammatory cytokines which contribute to the inflammatory states of the CNS. Accumulating data suggest the key role of inflammation in AD pathogenesis. In a prospective...

Mohammad Amin Bayat Tork, Mohsen Saberifar, Sajjad Sahab Negah,

Traumatic brain injury (TBI) is physical damage to the brain structure which has a high global rate of mortality and morbidity. TBI can cause intense inflammatory response due to accumulation of leukocytes in cerebral matrix and activation of microglia. Microglia can differentiate into M1 macrophages or M2 macrophages following the changes in biochemical properties of brain tissue. M1 sub type ...

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