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Sleep recalibrates homeostatic and associative synaptic plasticity in the human cortex

by Spiegelhalder, Kai , Mainberger, Florian , Feige, Bernd , Jung, Nikolai H. , Maywald, Sarah , Eckert, Anne , Schmid, Hanna , Reis, Janine , Klöppel, Stefan , Sterr, Annette , Kuhn, Marion , Mall, Volker , Normann, Claus , Riemann, Dieter , Maier, Jonathan G. , Bürklin, Jan , Wolf, Elias , Nissen, Christoph

in 38/23 / 631/378/1385 / 631/378/2591 / Homeostasis / Humanities and Social Sciences / Hypotheses / Memory / multidisciplinary / Neurosciences / Plasticity / Science / Science (multidisciplinary) / Sleep deprivation / Transcranial magnetic stimulation

2016

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Sleep recalibrates homeostatic and associative synaptic plasticity in the human cortex

2016

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2016

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Journal Article

Sleep recalibrates homeostatic and associative synaptic plasticity in the human cortex

Spiegelhalder, Kai,

Mainberger, Florian,

Feige, Bernd,

Jung, Nikolai H.,

Maywald, Sarah,

Eckert, Anne,

Schmid, Hanna,

Reis, Janine,

Klöppel, Stefan,

Sterr, Annette,

Kuhn, Marion,

Mall, Volker,

Normann, Claus,

Riemann, Dieter,

Maier, Jonathan G.,

Bürklin, Jan,

Wolf, Elias,

Nissen, Christoph

2016

Overview

Sleep is ubiquitous in animals and humans, but its function remains to be further determined. The synaptic homeostasis hypothesis of sleep–wake regulation proposes a homeostatic increase in net synaptic strength and cortical excitability along with decreased inducibility of associative synaptic long-term potentiation (LTP) due to saturation after sleep deprivation. Here we use electrophysiological, behavioural and molecular indices to non-invasively study net synaptic strength and LTP-like plasticity in humans after sleep and sleep deprivation. We demonstrate indices of increased net synaptic strength (TMS intensity to elicit a predefined amplitude of motor-evoked potential and EEG theta activity) and decreased LTP-like plasticity (paired associative stimulation induced change in motor-evoked potential and memory formation) after sleep deprivation. Changes in plasma BDNF are identified as a potential mechanism. Our study indicates that sleep recalibrates homeostatic and associative synaptic plasticity, believed to be the neural basis for adaptive behaviour, in humans. Sleep deprivation is believed to lead to homeostatic increases in synaptic strength and reduced inducibility of associative LTP, based mainly on findings from animal studies. Here, Kuhn et al . demonstrate similar sleep-dependent synaptic plasticity changes in humans along with altered plasma BDNF levels.

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Publisher

Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio

Subject

/ Humanities and Social Sciences

/ Hypotheses

/ Memory