نتایج جستجو برای: pyramidal
تعداد نتایج: 15047 فیلتر نتایج به سال:
We propose a deep Graph Neural Network (GNN) model that alternates two types of layers. The first type is inspired by Reservoir Computing (RC) and generates new vertex features iterating non-linear map until it converges to fixed point. second layer implements graph pooling operations, gradually reduce the support features, further improve computational efficiency RC-based GNN. architecture is,...
drug induced dystonic reactions are among common presentations of patients in emergency departments, and typically occur with antidopaminergic agents as their extra-pyramidal side effects. dystonic reactions usually occur within the first few hours or days after commencing a drug or dose increase. unlike other extra-pyramidal side effects, a patient may experience acute dystonic reactions (adrs...
Magnetic resonance imaging provides evidence for loss of both white and grey matter, in terms of tissue volume, from the cerebral hemispheres after traumatic brain injury. However, quantitative histopathological data are lacking. From the archive of the Department of Neuropathology at Glasgow, the cerebral cortex of 48 patients was investigated using stereology. Patients had survived 3 months a...
Five pyramidal cells from the posteromedial barrel subfield of mouse SmI cortex were labeled by Golgi impregnation and then gold-toned and de-impregnated (Fairen, Peters & Saldanha, 1977). Subsequently, 40 to 70 pm-long segments of their apical dendrites occurring in layer IV were graphically reconstructed from serial thin sections to determine the distribution of their synapses. Thalamocortica...
No matter what you’re doing at any given moment, from walking to talking or even sleeping, your brain is doing its own thing. Networks of neurons constantly and often spontaneously generate rhythmic electrical activity in the cortex, the brain’s outermost layer and the seat of judgment, decision making, and other higher order functions. These cortical networks contain pyramidal cells that can e...
The visual cortex of 20 day old rats and rabbits has been considered as mature on the basis of the observations that the dendritic arborization and the overall synaptic population have almost reached their adult stage in these animals. In the present study we have investigated the visual cortex of 20 day and 7 month old (adult) rabbits in order to determine whether this apparent adult appearanc...
Pyramidal cells are characterized by markedly different sized dendritic trees, branching patterns, and spine density across the cortical mantle. Moreover, pyramidal cells have been shown to differ in structure among homologous cortical areas in different species; however, most of these studies have been conducted in primates. Whilst pyramidal cells have been quantified in a few cortical areas i...
Tetanic stimulation of the CA1 region of rat hippocampal slices can induce gamma frequency population oscillations (30-100 Hz) after a latency of 50-150 msec that are synchronized to within 1-2 msec when simultaneous stimuli are delivered to two sites 2 mm or more apart. When tetanic stimuli, twice-threshold for eliciting gamma oscillations, are used, new phenomena occur. (1) After a period of ...
Introduction : clozapine is the first effective antipsychotic drug with the least extra pyramidal side effects and more agranulocytosis than other standard neuroleptics. Granolocytopenia or agranulocytosis occurs in 1 to 2 percent of all patients treated with clozapine. agranulocytosis due to clozapine is a fatal disorder that requires immediate clinical intervention. Method : this paper re...
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