Neuronal avalanches differ from wakefulness to deep sleep--evidence from intracranial depth recordings in humans.

Neuronal activity differs between wakefulness and sleep states. In contrast, an attractor state, called self-organized critical (SOC), was proposed to govern brain dynamics because it allows for optimal information coding. But is the human brain SOC for each vigilance state despite the variations in...

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Autores principales:	Viola Priesemann, Mario Valderrama, Michael Wibral, Michel Le Van Quyen
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/b44f8cb52e6d40e2b78a941a3ea3cf91
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spelling	oai:doaj.org-article:b44f8cb52e6d40e2b78a941a3ea3cf912021-11-18T05:52:19ZNeuronal avalanches differ from wakefulness to deep sleep--evidence from intracranial depth recordings in humans.1553-734X1553-735810.1371/journal.pcbi.1002985https://doaj.org/article/b44f8cb52e6d40e2b78a941a3ea3cf912013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23555220/?tool=EBIhttps://doaj.org/toc/1553-734Xhttps://doaj.org/toc/1553-7358Neuronal activity differs between wakefulness and sleep states. In contrast, an attractor state, called self-organized critical (SOC), was proposed to govern brain dynamics because it allows for optimal information coding. But is the human brain SOC for each vigilance state despite the variations in neuronal dynamics? We characterized neuronal avalanches--spatiotemporal waves of enhanced activity--from dense intracranial depth recordings in humans. We showed that avalanche distributions closely follow a power law--the hallmark feature of SOC--for each vigilance state. However, avalanches clearly differ with vigilance states: slow wave sleep (SWS) shows large avalanches, wakefulness intermediate, and rapid eye movement (REM) sleep small ones. Our SOC model, together with the data, suggested first that the differences are mediated by global but tiny changes in synaptic strength, and second, that the changes with vigilance states reflect small deviations from criticality to the subcritical regime, implying that the human brain does not operate at criticality proper but close to SOC. Independent of criticality, the analysis confirms that SWS shows increased correlations between cortical areas, and reveals that REM sleep shows more fragmented cortical dynamics.Viola PriesemannMario ValderramaMichael WibralMichel Le Van QuyenPublic Library of Science (PLoS)articleBiology (General)QH301-705.5ENPLoS Computational Biology, Vol 9, Iss 3, p e1002985 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biology (General) QH301-705.5
spellingShingle	Biology (General) QH301-705.5 Viola Priesemann Mario Valderrama Michael Wibral Michel Le Van Quyen Neuronal avalanches differ from wakefulness to deep sleep--evidence from intracranial depth recordings in humans.
description	Neuronal activity differs between wakefulness and sleep states. In contrast, an attractor state, called self-organized critical (SOC), was proposed to govern brain dynamics because it allows for optimal information coding. But is the human brain SOC for each vigilance state despite the variations in neuronal dynamics? We characterized neuronal avalanches--spatiotemporal waves of enhanced activity--from dense intracranial depth recordings in humans. We showed that avalanche distributions closely follow a power law--the hallmark feature of SOC--for each vigilance state. However, avalanches clearly differ with vigilance states: slow wave sleep (SWS) shows large avalanches, wakefulness intermediate, and rapid eye movement (REM) sleep small ones. Our SOC model, together with the data, suggested first that the differences are mediated by global but tiny changes in synaptic strength, and second, that the changes with vigilance states reflect small deviations from criticality to the subcritical regime, implying that the human brain does not operate at criticality proper but close to SOC. Independent of criticality, the analysis confirms that SWS shows increased correlations between cortical areas, and reveals that REM sleep shows more fragmented cortical dynamics.
format	article
author	Viola Priesemann Mario Valderrama Michael Wibral Michel Le Van Quyen
author_facet	Viola Priesemann Mario Valderrama Michael Wibral Michel Le Van Quyen
author_sort	Viola Priesemann
title	Neuronal avalanches differ from wakefulness to deep sleep--evidence from intracranial depth recordings in humans.
title_short	Neuronal avalanches differ from wakefulness to deep sleep--evidence from intracranial depth recordings in humans.
title_full	Neuronal avalanches differ from wakefulness to deep sleep--evidence from intracranial depth recordings in humans.
title_fullStr	Neuronal avalanches differ from wakefulness to deep sleep--evidence from intracranial depth recordings in humans.
title_full_unstemmed	Neuronal avalanches differ from wakefulness to deep sleep--evidence from intracranial depth recordings in humans.
title_sort	neuronal avalanches differ from wakefulness to deep sleep--evidence from intracranial depth recordings in humans.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/b44f8cb52e6d40e2b78a941a3ea3cf91
work_keys_str_mv	AT violapriesemann neuronalavalanchesdifferfromwakefulnesstodeepsleepevidencefromintracranialdepthrecordingsinhumans AT mariovalderrama neuronalavalanchesdifferfromwakefulnesstodeepsleepevidencefromintracranialdepthrecordingsinhumans AT michaelwibral neuronalavalanchesdifferfromwakefulnesstodeepsleepevidencefromintracranialdepthrecordingsinhumans AT michellevanquyen neuronalavalanchesdifferfromwakefulnesstodeepsleepevidencefromintracranialdepthrecordingsinhumans
_version_	1718424750722646016

Neuronal avalanches differ from wakefulness to deep sleep--evidence from intracranial depth recordings in humans.

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