Corticothalamic Inhibition in the Thalamic Reticular Nucleus
نویسندگان
چکیده
منابع مشابه
Corticothalamic inhibition in the thalamic reticular nucleus.
Mutual inhibition between the GABAergic cells of the thalamic reticular nucleus (RTN) is important in regulating oscillations in the thalamocortical network, promoting those in the spindle range of frequencies over those at lower frequencies. Excitatory inputs to the RTN from the cerebral cortex are numerically large and particularly powerful in inducing spindles. However, the extent to which c...
متن کاملElectrical synapses in the thalamic reticular nucleus.
Neurons of the thalamic reticular nucleus (TRN) provide inhibitory input to thalamic relay cells and generate synchronized activity during sleep and seizures. It is widely assumed that TRN cells interact only via chemical synaptic connections. However, we show that many neighboring pairs of TRN neurons in rats and mice are electrically coupled. In paired-cell recordings, electrical synapses wer...
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BACKGROUND The thalamic reticular nucleus (TRN) is a shell-shaped gamma amino butyric acid (GABA)ergic nucleus, which is uniquely placed between the thalamus and the cortex, because it receives excitatory afferents from both cortical and thalamic neurons and sends inhibitory projections to all nuclei of the dorsal thalamus. METHOD A review of the evidence suggesting that the TRN is implicated...
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T projections of neocortical neurons to the thalamus are much denser than those from ascending pathways arising in the spinal cord and brainstem. Corticothalamic projections are estimated to outnumber thalamocortical ones by an order of magnitude. Thus, although the thalamus is the gateway of most sensory signals in their route to the cerebral cortex, the feedback corticothalamic projections ar...
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In this paper we present an analysis of the visual sector of the Thalamic Reticular Nucleus (TRN) from 3, 6, 18, 24 and 30 month old Wistar rats using stereological methods. The volume density (Vv), the number of neurones per surface unit (Na) and the neurone numerical density (Nv) showed a progressive decrease between the 3rd and the 24th months as the animals aged, whereas a significant incre...
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ژورنال
عنوان ژورنال: Journal of Neurophysiology
سال: 2004
ISSN: 0022-3077,1522-1598
DOI: 10.1152/jn.00624.2003