Results 201 to 210 of about 189,264,868 (250)
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Annual Review of Neuroscience, 1988
In comparing strategies used to control neuron number, we find it useful to view nervous system development as occurring in three phases. The phases overlap--each is a process, not an event. The first phase is the development of a genetic nervous system. This is a nervous system of simple genetic intention, not a blueprint or pile of bricks.
Williams, Robert, Herrup, Karl
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In comparing strategies used to control neuron number, we find it useful to view nervous system development as occurring in three phases. The phases overlap--each is a process, not an event. The first phase is the development of a genetic nervous system. This is a nervous system of simple genetic intention, not a blueprint or pile of bricks.
Williams, Robert, Herrup, Karl
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Numbers of neurons and non-neuronal cells in human trigeminal ganglia
Neurological Research, 2000We analyzed both trigeminal ganglia of eight post-mortem human subjects for their content of neurons and non-neuronal cells using dissociated cell suspension techniques. Neuronal counts in each of the 16 ganglia ranged from 20,000 to 35,400, with an average of 27,400 +/- 4800, and the estimated ratio of non-neuronal to neuronal cells was 100 to 1.
J J, LaGuardia, R J, Cohrs, D H, Gilden
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Nature Reviews Neuroscience, 2016
Humans and non-human primates share an elemental quantification system that resides in a dedicated neural network in the parietal and frontal lobes. In this cortical network, 'number neurons' encode the number of elements in a set, its cardinality or numerosity, irrespective of stimulus appearance across sensory motor systems, and from both spatial and
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Humans and non-human primates share an elemental quantification system that resides in a dedicated neural network in the parietal and frontal lobes. In this cortical network, 'number neurons' encode the number of elements in a set, its cardinality or numerosity, irrespective of stimulus appearance across sensory motor systems, and from both spatial and
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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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