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The contribution of ion channels in input-output plasticity

Abstract : Persistent changes that occur in brain circuits are classically thought to be mediated by long-term modifications in synaptic efficacy. Yet, many studies have shown that voltage-gated ion channels located at the input and output side of the neurons are also the subject to persistent modifications. These channels are thus responsible for intrinsic plasticity that is expressed in many different neuronal types including glutamatergic principal neurons and GABAergic interneurons. As for synaptic plasticity, activation of synaptic glutamate receptors initiate persistent modification in neuronal excitability. We review here how synaptic input can be efficiently altered by activity-dependent modulation of ion channels that control EPSP amplification, spike threshold or resting membrane potential. We discuss the nature of the learning rules shared by intrinsic and synaptic plasticity , the mechanisms of ion channel regulation and the impact of intrinsic plasticity on induction of synaptic modifications.
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Submitted on : Thursday, November 14, 2019 - 2:58:14 PM
Last modification on : Friday, November 15, 2019 - 1:37:03 AM
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Dominique Debanne, Michaël Russier. The contribution of ion channels in input-output plasticity. Neurobiology of Learning and Memory, Elsevier, 2019, ⟨10.1016/j.nlm.2019.107095⟩. ⟨hal-02363603⟩

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