Supraspinal Shaping of Adaptive Transitions in the State of Functional Connectivity Between Segmentally Distributed Dorsal Horn Neuronal Populations in Response to Nociception and Antinociception.
Markov process
antinociception
cord dorsum potentials
dorsal horn neurons
functional connectivity
machine learning
nociception
state transitions
Journal
Frontiers in systems neuroscience
ISSN: 1662-5137
Titre abrégé: Front Syst Neurosci
Pays: Switzerland
ID NLM: 101477946
Informations de publication
Date de publication:
2019
2019
Historique:
received:
26
04
2019
accepted:
26
08
2019
entrez:
17
10
2019
pubmed:
17
10
2019
medline:
17
10
2019
Statut:
epublish
Résumé
In the anesthetized cat the correlation between the ongoing cord dorsum potentials (CDPs) recorded from different lumbar spinal segments has a non-random structure, suggesting relatively stable patterns of functional connectivity between the dorsal horn neuronal ensembles involved in the generation of these potentials. During the nociception induced by the intradermic injection of capsaicin, the patterns of segmental correlation between the spontaneous CDPs acquire other non-random configurations that are temporarily reversed to their pre-capsaicin state by the systemic injection of lidocaine, a procedure known to decrease the manifestation of neuropathic pain in both animals and humans. We have now extended these studies and utilized machine learning for the automatic extraction and selection of particular classes of CDPs according to their shapes and amplitudes. By using a Markovian analysis, we disclosed the transitions between the different kinds of CDPs induced by capsaicin and lidocaine and constructed a global model based on the changes in the behavior of the CDPs generated along the whole set of lumbar segments. This allowed the identification of the different states of functional connectivity within the whole ensemble of dorsal horn neurones attained during nociception and their transitory reversal by systemic administration of lidocaine in preparations with the intact neuroaxis and after spinalization. The present observations provide additional information on the state of self-organized criticality that leads to the adaptive behavior of the dorsal horn neuronal networks during nociception and antinociception both shaped by supraspinal descending influences.
Identifiants
pubmed: 31616259
doi: 10.3389/fnsys.2019.00047
pmc: PMC6775247
doi:
Types de publication
Journal Article
Langues
eng
Pagination
47Informations de copyright
Copyright © 2019 Martín, Béjar, Chávez, Ramírez-Morales, Hernández, Moreno, Contreras-Hernández, Glusman, Cortés and Rudomin.
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