Results 21 to 30 of about 194,703 (370)
Dynamic image recognition in a spiking neuron network supplied by astrocytes [PDF]
, 2022 Mathematical model of spiking neuron network (SNN) supplied by astrocytes is investigated. The astrocytes are specific type of brain cells which are not electrically excitable but inducing chemical modulations of neuronal firing. We analyzed how the astrocytes influence on images encoded in the form of dynamic spiking pattern of the SNN.
arxiv +1 more source
Dynamic Transitions in Neuronal Network Firing Sustained by Abnormal Astrocyte Feedback
Neural Plasticity, 2020 Astrocytes play a crucial role in neuronal firing activity. Their abnormal state may lead to the pathological transition of neuronal firing patterns and even induce seizures.
Yangyang Yu +4 more
doaj +1 more source
Progress in Neurobiology, 2008 Neurons have long held the spotlight as the central players of the nervous system, but we must remember that we have equal numbers of astrocytes and neurons in the brain. Are these cells only filling up the space and passively nurturing the neurons, or do they also contribute to information transfer and processing?
Doris D. Wang, Angélique Bordey
openaire +3 more sources
Scientific Reports, 2022 An emerging link between circadian clock function and neurodegeneration has indicated a critical role for the molecular clock in brain health. We previously reported that deletion of the core circadian clock gene Bmal1 abrogates clock function and ...
Celia A. McKee +5 more
doaj +1 more source
Contextual guidance: An integrated theory for astrocytes function in brain circuits and behavior [PDF]
, 2022 The participation of astrocytes in brain computation was formally hypothesized in 1992, coinciding with the discovery that these glial cells display a complex form of Ca2+ excitability. This fostered conceptual advances centered on the notion of reciprocal interactions between neurons and astrocytes, which permitted a critical leap forward in ...
arxiv +1 more source
Astrocyte Reprogramming in Stroke: Opportunities and Challenges
Frontiers in Aging Neuroscience, 2022 Stroke is a major cause of morbidity and mortality worldwide. In the early stages of stroke, irreversible damage to neurons leads to high mortality and disability rates in patients.
Zhouzhou Peng +7 more
doaj +1 more source
Emergent dynamics in an astrocyte-neuronal network coupled via nitric oxide [PDF]
, 2022 In the brain, both neurons and glial cells work in conjunction with each other during information processing. Stimulation of neurons can cause calcium oscillations in astrocytes which in turn can affect neuronal calcium dynamics. The "glissandi" effect is one such phenomenon, associated with a decrease in infraslow fluctuations, in which synchronized ...
arxiv +1 more source
Vimentin Phosphorylation Is Required for Normal Cell Division of Immature Astrocytes
Cells, 2019 Vimentin (VIM) is an intermediate filament (nanofilament) protein expressed in multiple cell types, including astrocytes. Mice with VIM mutations of serine sites phosphorylated during mitosis (VIMSA/SA) show cytokinetic failure in fibroblasts and lens ...
Yolanda de Pablo +6 more
doaj +1 more source
Journal of Neuroinflammation, 2023 Despite extensive astrocyte activation in patients suffering from HIV-associated neurocognitive disorders (HAND), little is known about the contribution of astrocytes to HAND neuropathology.
Jingxian Lun +10 more
doaj +1 more source
Astrocytes mediate in vivo cholinergic-induced synaptic plasticity. [PDF]
PLoS Biology, 2012 Long-term potentiation (LTP) of synaptic transmission represents the cellular basis of learning and memory. Astrocytes have been shown to regulate synaptic transmission and plasticity.
Marta Navarrete +6 more
doaj +1 more source