Results 161 to 170 of about 10,599 (209)

Multistability in the corticothalamic system

Journal of Theoretical Biology, 2017
Neural field theory of the corticothalamic system is used to analyze the properties of its steady-state solutions, including their linear stability, in the parameter space of synaptic couplings for physiological parameter ranges representing normal arousal waking states in adult humans. The independent connections of the corticothalamic model define an
Sanz-Leon, Paula, Robinson, P. A.
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Complexities in the Thalamocortical and Corticothalamic Pathways

European Journal of Neuroscience, 1997
AbstractIt is now a century since Kölliker (Handbuch der Gewebelehre des Menschen. Nervensystemen des Menschen und der Thiere, Vol. 2, 6th edn. Engelmann, Leipzig, 1896) described the thalamic reticular nucleus as the ‘Gitterkern’ or lattice nucleus on the basis of the fibrous latticework that is the characteristic feature of this part of the ventral ...
N C, Adams, D A, Lozsádi, R W, Guillery
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Corticothalamic feedback and sensory processing

Current Opinion in Neurobiology, 2003
Although nearly half of the synaptic input to neurons in the dorsal thalamus comes from the cerebral cortex, the role of corticothalamic projections in sensory processing remains elusive. Although sensory afferents certainly establish the basic receptive field properties of thalamic neurons, increasing evidence indicates that feedback from the cortex ...
Henry J, Alitto, W Martin, Usrey
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The corticothalamic system in sleep

Frontiers in Bioscience, 2003
The transition from wakefulness to NREM sleep is associated with typical signs of brain electrical activity, characterized by prolonged periods of hyperpolarization and increased membrane conductance in thalamocortical (TC) neurons, with the consequence that incoming messages are inhibited and the cerebral cortex is deprived of signals from the outside
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On the Function of Corticothalamic Neurons

Science, 1960
The effect of the synchronous discharge of a large population of corticothalamic neurons on activity within the somatosensory relay nuclei has been studied. Thalamic responses to peripheral nerve stimulation are depressed by activity in corticothalamic neurons.
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Development of Corticothalamic Projections

2023
Abstract This chapter discusses the recent advances and current understanding of the development of corticothalamic projections. These projections arise from subpopulations of cortical neurons that reside in layers V and VI. Distinct in their pattern of thalamic innervation and function, descending projections from layers 5 and 6 also ...
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Oscillatory corticothalamic response to somatosensory input

Biosystems, 1998
We construct a model of the thalamocortical feedback loop using the Random Neural Network model to provide a theoretical explanation for cortical and thalamic damped rapid (circa 60-100 Hz) oscillations which have been observed in lightly anesthesized rats with somatosensory input Nicolelis (1997).
E, Gelenbe, C, Cramer
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Classification of Thalamocortical and Corticothalamic Motifs

2021
Abstract There is great variety in the types of thalamocortical and corticothalamic projections, and a prerequisite to any deep understanding of these critical parts of brain circuitry is developing a proper classification of their elements.
W. Martin Usrey, S. Murray Sherman
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Corticothalamic Interactions in the Auditory System

2023
Abstract The medial geniculate body (MGB) or auditory thalamus comprises both first-order and higher-order subdivisions, each of which has a distinct pattern of thalamocortical connections. Pyramidal neurons in layer 6 link each area of the auditory cortex with the region of the thalamus from which it receives most of its ascending input,
Victoria M. Bajo, Andrew J. King
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Nonlinear harmonic generation in the corticothalamic system

Journal of Theoretical Biology, 2019
Neural field theory of the corticothalamic system is applied to quantitatively analyze harmonic generation in normal sleep and wake states. The linear power spectrum is derived analytically via the transfer function and is then convolved with itself and other factors to calculate the nonlinear power spectrum analytically via a recent perturbation ...
M. Ferdousi, T. Babaie Janvier, P.A. Robinson   +2 more
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