Abstract
During the last decade, our vision of the neuronal dendritic tree has changed from a simple input device conducting afferent input as a passive cable to the cell soma to a series of independent and actively operating processing units. Different voltage- and ligand-gated ion channels located in the dendritic tree not only participate in processing afferent inputs but also enable the dendritic tree to initiate regenerative spikes, traditionally considered to be exclusively restricted to axonal structures. Recent results suggest that these local dendritic spikes may act as a means to initiate longterm synaptic plasticity. Different from Hebbian synaptic plasticity this type of induction does not need axonal action potential firing and backpropagation into the dendrite. This new proximity learning rule, first postulated by neural network theorists, may have large significance for the information processing in the brain.
Keywords: dendritic spike, synaptic plasticity, long term depression, long term potentiation, learning rule
Current Neurovascular Research
Title: Regenerative Dendritic Spikes and Synaptic Plasticity
Volume: 1 Issue: 4
Author(s): Knut Holthoff
Affiliation:
Keywords: dendritic spike, synaptic plasticity, long term depression, long term potentiation, learning rule
Abstract: During the last decade, our vision of the neuronal dendritic tree has changed from a simple input device conducting afferent input as a passive cable to the cell soma to a series of independent and actively operating processing units. Different voltage- and ligand-gated ion channels located in the dendritic tree not only participate in processing afferent inputs but also enable the dendritic tree to initiate regenerative spikes, traditionally considered to be exclusively restricted to axonal structures. Recent results suggest that these local dendritic spikes may act as a means to initiate longterm synaptic plasticity. Different from Hebbian synaptic plasticity this type of induction does not need axonal action potential firing and backpropagation into the dendrite. This new proximity learning rule, first postulated by neural network theorists, may have large significance for the information processing in the brain.
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Cite this article as:
Holthoff Knut, Regenerative Dendritic Spikes and Synaptic Plasticity, Current Neurovascular Research 2004; 1 (4) . https://dx.doi.org/10.2174/1567202043362144
DOI https://dx.doi.org/10.2174/1567202043362144 |
Print ISSN 1567-2026 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5739 |
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