Evidence map›Paper›PMID 30736883›Full record

ArticleJournal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine2019

Nightmare Severity Is Inversely Related to Frontal Brain Activity During Waking State Picture Viewing.

Louis-Philippe Marquis, Sarah-Hélène Julien, Andrée-Ann Baril, Cloé Blanchette-Carrière, Tyna Paquette, Michelle Carr, Jean-Paul Soucy, Jacques Montplaisir, Tore Nielsen

Open access · bronzeAbstract read
In one paragraph

Article in Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

8 citing papers in PubMed, 22 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Nightmare Disorder and Isolated Sleep Paralysis.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2021
    Review
  7. Article
  8. A Meaningful Step Toward Understanding the Cause and Impact of Nightmares.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2019
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 3 institutions in 2 countries.

Louis-Philippe MarquisDepartment of Psychology, Université de Montréal, Montréal, Québec, Canada.
Sarah-Hélène JulienDepartment of Psychology, Université de Montréal, Montréal, Québec, Canada.
Andrée-Ann BarilCenter for Advanced Research in Sleep Medicine, CIUSSS-NÎM - Hôpital du Sacré-Coeur de Montréal, Montréal, Québec, Canada.
Cloé Blanchette-CarrièreCenter for Advanced Research in Sleep Medicine, CIUSSS-NÎM - Hôpital du Sacré-Coeur de Montréal, Montréal, Québec, Canada.
Tyna PaquetteCenter for Advanced Research in Sleep Medicine, CIUSSS-NÎM - Hôpital du Sacré-Coeur de Montréal, Montréal, Québec, Canada.
Michelle CarrSleep Laboratory, Swansea University, Swansea, United Kingdom.
Jean-Paul SoucyMontreal Neurological Institute, Montréal, Québec, Canada.
Jacques MontplaisirCenter for Advanced Research in Sleep Medicine, CIUSSS-NÎM - Hôpital du Sacré-Coeur de Montréal, Montréal, Québec, Canada.
Tore NielsenCenter for Advanced Research in Sleep Medicine, CIUSSS-NÎM - Hôpital du Sacré-Coeur de Montréal, Montréal, Québec, Canada.
Hôpital du Sacré-Cœur de Montréal · CAMontreal Neurological Institute and Hospital · CASwansea University · GB

Funding

CIHR MOP-115125
6 · The paper itself

Abstract

STUDY

objectivesGrowing evidence suggests that nightmares have considerable adverse effects on waking behavior, possibly by increasing post-sleep negative emotions. Dysphoric reactions to nightmares are one component of nightmare severity for which the neural correlates are unknown. Here, we investigate possible neural correlates of nightmare severity in a sample of individuals who frequently recall nightmares.

methodsOur principal measure of nightmare severity is nightmare distress as indexed by the Nightmare Distress Questionnaire (NDQ), and secondary measures are retrospective and prospective estimates of frequency of recalling dysphoric dreams (DD). We used high-resolution technetium 99m ethyl cysteinate dimer single photon emission computed tomography to assess regional cerebral blood flow (rCBF) while 18 individuals who were frequent nightmare recallers viewed negative and neutral pictures from the International Affective Picture System. We correlated rCBF with NDQ scores and DD recall frequency estimates.

resultsNegative correlations were observed between NDQ scores and rCBF during negative picture viewing in bilateral insula and anterior cingulate, right medial frontal gyrus, bilateral superior temporal gyrus, right inferior frontal and precentral gyri, and bilateral putamen. Retrospective DD recall correlated with rCBF activity primarily in regions overlapping those related to NDQ scores. Prospective DD recall was only weakly related to rCBF. Results for the neutral condition overlapped partially with those for the negative condition; in particular, NDQ and retrospective DD recall were related to rCBF in medial prefrontal and anterior cingulate gyri.

conclusionsResults point to a possible overlap in brain mechanisms involved in nightmare dysphoria (during sleep) and distress (during wakefulness) among individuals who frequently recall nightmares. They provide partial support for a neurocognitive model of nightmares. COMMENTARY: A commentary on this article appears in this issue on page 179.

Indexed as

AdolescentAdultArousalCorrelation of DataDreamsEmotionsFemaleGyrus CinguliHumansMalePattern Recognition, VisualPrefrontal CortexRegional Blood FlowSingle Photon Emission Computed Tomography Computed TomographySurveys and QuestionnairesWakefulnessbrain imagingdistressnightmaresparasomniaspsychopathology

Identifiers

PMID30736883
PMCPMC6374093
OpenAlexW2912551200

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.