نتایج جستجو برای: neuronal density

تعداد نتایج: 525124  

Journal: :NeuroImage 2009
André C. Marreiros Stefan J. Kiebel Jean Daunizeau Lee M. Harrison Karl J. Friston

In this paper, we describe a generic approach to modelling dynamics in neuronal populations. This approach models a full density on the states of neuronal populations but finesses this high-dimensional problem by re-formulating density dynamics in terms of ordinary differential equations on the sufficient statistics of the densities considered (c.f., the method of moments). The particular form ...

2014
Alexandru Parlog Laura-Adela Harsan Marta Zagrebelsky Marianna Weller Dominik von Elverfeldt Christian Mawrin Martin Korte Ildiko Rita Dunay

Recent studies correlate chronic Toxoplasma gondii (T. gondii) infection with behavioral changes in rodents; additionally, seropositivity in humans is reported to be associated with behavioral and neuropsychiatric diseases. In this study we investigated whether the described behavioral changes in a murine model of chronic toxoplasmosis are associated with changes in synaptic plasticity and brai...

Journal: :مجله علوم اعصاب شفای خاتم 0
assrin babahajian cellular and molecular research center, iran university of medical science, tehran, iran. noorolhoda fotovat cellular and molecular research center, iran university of medical science, tehran, iran. mansureh soleimani cellular and molecular research center, iran university of medical science, tehran, iran.

ischemia has an important role in spread of pathologic injuries in the neuropathies. it is widely accepted that most damages such as reperfusion injuries, are related to the activity of free radicals. apoptotic signaling was exacerbated by free radicals. the aim of this study was to evaluate the neuroprotective effect of human chorionic gonadotropin (hcg) and vitamin e (trolox) in the hippocamp...

Journal: :Journal of neurophysiology 2004
Patrick S Mangan Jaideep Kapur

Factors contributing to reduced magnesium-induced neuronal action potential bursting were investigated in primary hippocampal cell culture at high and low culture density. In nominally zero external magnesium medium, pyramidal neurons from high-density cultures produced recurrent spontaneous action potential bursts superimposed on prolonged depolarizations. These bursts were partially attenuate...

Journal: :Journal of neuropathology and experimental neurology 1991
R H Myers J P Vonsattel P A Paskevich D K Kiely T J Stevens L A Cupples E P Richardson E D Bird

Decreased density of neurons was found throughout the head of the caudate nucleus in Huntington's disease (HD), with the most severe neuronal loss early in the disease in the medial region. The density of reactive astrocytes is inversely proportional to the neuronal loss. In cases of mild Huntington's disease which had no identifiable abnormality on conventional neuropathologic evaluation (grad...

2011
Kian Loong Lim Annie Tay Vishna Devi Nadarajah Nilesh Kumar Mitra

BACKGROUND Chlorpyrifos (CPF), a commonly used pesticide worldwide, has been reported to produce neurobehavioural changes. Dermal exposure to CPF is common in industries and agriculture. This study estimates changes in glial fibrillary acidic protein (GFAP) expression in hippocampal regions and correlates with histomorphometry of neurons and serum cholinesterase levels following dermal exposure...

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