Evidence map›Paper›PMID 25325470›Full record

ArticleSleep2015

Postsynaptic inhibition of hypoglossal motoneurons produces atonia of the genioglossal muscle during rapid eye movement sleep.

Simon J Fung, Michael H Chase

Open access · bronzeAbstract read
In one paragraph

Article in Sleep, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.7field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 21 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 2 institutions in 1 country.

Simon J FungVA Greater Los Angeles Healthcare System, Los Angeles, CA: Websciences International, Los Angeles, CA.
Michael H ChaseVA Greater Los Angeles Healthcare System, Los Angeles, CA: Websciences International, Los Angeles, CA: Department of Physiology, UCLA School of Medicine, Los Angeles, CA.
University of California, Los Angeles · USVA Greater Los Angeles Healthcare System · US

Funding

Noradrenergic A7 neurons and Upper Airway Motor ControlR01HL116845 · NHLBI · BRENTWOOD BIOMEDICAL RESEARCH INSTITUTE · PI FENIK, VICTOR BORISOVICH · 2013 to 2016
$1.2M
Canadian Institutes of Health Research TGS-109219NHLBI NIH HHS 1R01HL116845
6 · The paper itself

Abstract

STUDY

objectivesHypoglossal motoneurons were recorded intracellularly to determine whether postsynaptic inhibition or disfacilitation was responsible for atonia of the lingual muscles during rapid eye movement (REM) sleep.

designIntracellular records were obtained of the action potentials and subthreshold membrane potential activity of antidromically identified hypoglossal motoneurons in cats during wakefulness, nonrapid eye movement (NREM) sleep, and REM sleep. A cuff electrode was placed around the hypoglossal nerve to antidromically activate hypoglossal motoneurons. The state-dependent changes in membrane potential, spontaneous discharge, postsynaptic potentials, and rheobase of hypoglossal motoneurons were determined. ANALYSES AND

resultsDuring quiet wakefulness and NREM sleep, hypoglossal motoneurons exhibited spontaneous repetitive discharge. In the transition from NREM sleep to REM sleep, repetitive discharge ceased and the membrane potential began to hyperpolarize; maximal hyperpolarization (10.5 mV) persisted throughout REM sleep. During REM sleep there was a significant increase in rheobase, which was accompanied by barrages of large-amplitude inhibitory postsynaptic potentials (IPSPs), which were reversed following the intracellular injection of chloride ions. The latter result indicates that they were mediated by glycine; IPSPs were not present during wakefulness or NREM sleep.

conclusionsWe conclude that hypoglossal motoneurons are postsynaptically inhibited during naturally occurring REM sleep; no evidence of disfacilitation was observed. The data also indicate that glycine receptor-mediated postsynaptic inhibition of hypoglossal motoneurons is crucial in promoting atonia of the lingual muscles during REM sleep.

Indexed as

Muscle HypotoniaAnimalsCatsChloridesElectric StimulationHypoglossal NerveInhibitory Postsynaptic PotentialsMaleMembrane PotentialsMotor NeuronsMusclesReceptors, GlycineSleep, REMTongueWakefulnessChloridesReceptors, GlycineatoniahypoglossalIPSPmotoneuronOSApostsynaptic inhibitionREM sleep

Identifiers

PMID25325470
PMCPMC4262947
OpenAlexW2313670466

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.