Results 221 to 230 of about 287,859 (265)
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Hippocampal Neuron Number in Schizophrenia
Archives of General Psychiatry, 1991Neuropathologic and neuroradiologic studies have reported hippocampal abnormalities in schizophrenics. We estimated the total number of neurons in the hippocampus of schizophrenics and controls to elucidate the neuronal basis of such changes. Thirteen brains of schizophrenics and 13 control brains closely matched for sex and age were studied.
S, Heckers +3 more
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Computation with a Number of Neurons
2002An essential feature of neural information processing in the brain is that a stimulus is not represented by the activity of a single neuron but rather by the joint activities of a number of them. Such a coding strategy is called population coding. This paper reviews the recent progress on the understanding of computational properties of population ...
Si Wu, Danmei Chen
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On the number of neurons in the dentate gyrus of the rat
Brain Research, 1985We have estimated the number of dentate granule cells in Sprague-Dawley and Wistar rats at 1, 4 and 12 months of age. In Sprague-Dawley rats the number of granule cells is relatively constant throughout this period at about 1 million. In Wistar rats, on the other hand, there is a progressive increase in the number from about 700,000 at 1 month to 1 ...
B D, Boss, G M, Peterson, W M, Cowan
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Inactivation and adaptation of number neurons
Behavioral and Brain Sciences, 2009AbstractSingle-neuron recordings may help resolve the issue of abstract number representation in the parietal lobes. Two manipulations in particular – reversible inactivation and adaptation of apparent numerosity – could provide important insights into the causal influence of “numeron” activity. Taken together, these tests can significantly advance our
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Pruning via number of links and neuron activities
1993 IEEE International Symposium on Circuits and Systems, 2002A new pruning concept that is based on the number of connections or links and the neuron activities and/or sensitivities is proposed. The concept can be applied to a number of existing algorithms which would then generate a consistent subnetwork even when starting with different initial topologies.
Andrew Luk +3 more
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Simulations with a large number of neurons
Journal of Physics A: Mathematical and General, 1989The authors propose a new algorithm for evolution of neural networks, by division of the network into subnets, in order to reach retrieval of stored correlated patterns. They present a fast code for simulations with a large number of neurons ( approximately 10000). The simulations were carried out on a microcomputer.
T J P Penna, P M C Oliveira
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Logistics of neuronal protein turnover: Numbers and mechanisms
Molecular and Cellular Neuroscience, 2022Research in the past twenty years or so has revealed that neurons synthesize and degrade proteins at their synapses to enable synaptic proteome remodelling on demand and in real-time. Here we provide a quantitative overview of the decentralized neuronal protein-turnover logistics.
Sun, C. +1 more
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Fermat Number Applications and Fermat Neuron
2015This chapter presents Fermat numbers, and their applications to filtering, autocorrelation, and related areas with advantages over the conventional computing. This paper discusses the basic concepts of prime numbers like Mersenne primes and Fermat primes and their comparison for computing with advantage, modulo arithmetic, Galois field, and Chinese ...
V. K. Madan +2 more
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Neuron addition during growth of the postmetamorphic bullfrog: Sensory neuron and axon number
The Journal of Comparative Neurology, 1997Neuron addition is one means whereby the nervous system can compensate for increased body size. Neurons can be added either by mitosis of stem cells or by late differentiation of committed precursors. Previously, the doubling of hind limb dorsal root ganglion (DRG) neurons in postmetamorphic bullfrogs (Rana catesbeiana) was found to occur in the ...
M L, Meeker, P B, Farel
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Neuronal subtypes and anatomic asymmetry: changes in neuronal number and cell-packing density
Neuroscience, 1993The combined volume of an asymmetric cytoarchitectonic area is smaller than that of symmetric homologs. Asymmetry reflects fewer numbers of neurons in the smaller of the two sides. In this study we examined two types of neurons to check whether lateral differences in neuronal numbers affect different types of neurons comparably in the neocortex of the ...
G D, Rosen, G F, Sherman, A M, Galaburda
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