First Node of Ranvier Facilitates High-Frequency Burst Encoding
نویسندگان
چکیده
منابع مشابه
First Node of Ranvier Facilitates High-Frequency Burst Encoding
In central neurons the first node of Ranvier is located at the first axonal branchpoint, ∼ 100 μm from the axon initial segment where synaptic inputs are integrated and converted into action potentials (APs). Whether the first node contributes to this signal transformation is not well understood. Here it was found that in neocortical layer 5 axons, the first branchpoint is required for intrinsi...
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Dysfunction and/or disruption of nodes of Ranvier are now recognized as key contributors to the pathophysiology of various neurological diseases. One reason is that the excitable nodal axolemma contains a high density of Nav (voltage-gated Na+ channels) that are required for the rapid and efficient saltatory conduction of action potentials. Nodal physiology is disturbed by altered function, loc...
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In myelinated axons, action potential conduction is dependent on the discrete clustering of ion channels at specialized regions of the axon, termed nodes of Ranvier. This organization is controlled, at least in part, by the adherence of myelin sheaths to the axolemma in the adjacent region of the paranode. Age-related disruption in the integrity of internodal myelin sheaths is well described an...
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ژورنال
عنوان ژورنال: Neuron
سال: 2011
ISSN: 0896-6273
DOI: 10.1016/j.neuron.2011.06.024