Models of thalamocortical system
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چکیده
منابع مشابه
Computational models of thalamocortical augmenting responses.
Repetitive stimulation of the dorsal thalamus at 7-14 Hz produces an increasing number of spikes at an increasing frequency in neocortical neurons during the first few stimuli. Possible mechanisms underlying these cortical augmenting responses were analyzed with a computer model that included populations of thalamocortical cells, thalamic reticular neurons, up to two layers of cortical pyramida...
متن کاملConsciousness, anesthesia, and the thalamocortical system.
13 January 2013 E TYMOLOGICALLY, “thalamus” derives from the Greek thalamos, meaning “inner chamber,” and tholos, meaning “vault.”1 Neurobiologically, the thalamus is a bilateral structure in the diencephalon comprising approximately 50 nuclei and subnuclei with rich interconnections to other structures in the brain. Thalamic nuclei can be classified as specific (mediating relay of peripheral i...
متن کاملConnexon connexions in the thalamocortical system.
Electrical synapses are composed of gap junction channels that interconnect neurons. They occur throughout the mammalian brain, although this has been appreciated only recently. Gap junction channels, which are made of proteins called connexins, allow ionic current and small organic molecules to pass directly between cells, usually with symmetrical ease. Here we review evidence that electrical ...
متن کاملThalamocortical connections of the primary somatosensory cortex
Although each subdivision of primary somatosensory cortex (SI) receives dense input from the thalamus, but the exact location and type of information that the fibers convey have not been identified yet. In the present study, the exact source of thalamocortical fibers to areas 2 and 3b was investigated using tract-tracing techniques. Following injection of tracer into area 3b, labeled neurons ...
متن کاملPropagating waves in thalamus, cortex and the thalamocortical system: Experiments and models.
Propagating waves of activity have been recorded in many species, in various brain states, brain areas, and under various stimulation conditions. Here, we review the experimental literature on propagating activity in thalamus and neocortex across various levels of anesthesia and stimulation conditions. We also review computational models of propagating waves in networks of thalamic cells, corti...
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ژورنال
عنوان ژورنال: Scholarpedia
سال: 2007
ISSN: 1941-6016
DOI: 10.4249/scholarpedia.1796