Results 71 to 80 of about 443,257 (402)
Novel Technological Advances in Functional Connectomics in C. elegans
Journal of Developmental Biology, 2019 The complete structure and connectivity of the Caenorhabditis elegans nervous system (“mind of a worm„) was first published in 1986, representing a critical milestone in the field of connectomics.
Elizabeth M. DiLoreto +3 more
doaj +1 more source
Memcapacitive neural networks [PDF]
Electronics Letters 50, 141 (2014), 2013 We show that memcapacitive (memory capacitive) systems can be used as synapses in artificial neural networks. As an example of our approach, we discuss the architecture of an integrate-and-fire neural network based on memcapacitive synapses. Moreover, we demonstrate that the spike-timing-dependent plasticity can be simply realized with some of these ...
arxiv +1 more source
Les chaînes de traction des TGV
Comptes Rendus. MécaniqueThis article describes the different components of the TGV drive trains, from the TGV SE (1st TGV) to the TGVM.
Goeres, David
doaj +1 more source
FEBS Open Bio, EarlyView.Two biomarkers of Alzheimer's disease, amyloid β‐peptide (Aβ) and tau, induce the transformation of U‐251 and other glioblastoma cell lines into neurotoxic A1‐like reactive astrocytes. This transformation is produced by cytokines and is followed by upregulation of PMCA activity and isoform expression, and is closely associated with inflammation, as ...
María Berrocal +2 more
wiley +1 more source
SynEM, automated synapse detection for connectomics
eLife, 2017 Nerve tissue contains a high density of chemical synapses, about 1 per µm3 in the mammalian cerebral cortex. Thus, even for small blocks of nerve tissue, dense connectomic mapping requires the identification of millions to billions of synapses. While the
Benedikt Staffler +5 more
doaj +1 more source
Complementary action of chemical and electrical synapses to perception [PDF]
, 2014 We study the dynamic range of a cellular automaton model for a neuronal network with electrical and chemical synapses. The neural network is separated into two layers, where one layer corresponds to inhibitory, and the other corresponds to excitatory neurons.
arxiv +1 more source
Synapse efficiency diverges due to synaptic pruning following over-growth [PDF]
Phys. Rev. E, 68, 031910 (2003), 2002 In the development of the brain, it is known that synapses are pruned following over-growth. This pruning following over-growth seems to be a universal phenomenon that occurs in almost all areas -- visual cortex, motor area, association area, and so on. It has been shown numerically that the synapse efficiency is increased by systematic deletion.
arxiv +1 more source
Immunostaining for Homer reveals the majority of excitatory synapses in laminae I-III of the mouse spinal dorsal horn [PDF]
, 2016 The spinal dorsal horn processes somatosensory information before conveying it to the brain. The neuronal organization of the dorsal horn is still poorly understood, although recent studies have defined several distinct populations among the interneurons,
Abraira, Victoria E. +5 more
core +2 more sources
Direct imaging of lateral movements of AMPA receptors inside synapses [PDF]
EMBO J 22, 18 (15/09/2003) 4656-65, 2007 Trafficking of AMPA receptors in and out of synapses is crucial for synaptic plasticity. Previous studies have focused on the role of endo/exocytosis processes or that of lateral diffusion of extra-synaptic receptors. We have now directly imaged AMPAR movements inside and outside synapses of live neurons using single-molecule fluorescence microscopy ...
arxiv +1 more source