Evidence map›Paper›PMID 28536272›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2017

Social Laughter Triggers Endogenous Opioid Release in Humans.

Sandra Manninen, Lauri Tuominen, Robin I Dunbar, Tomi Karjalainen, Jussi Hirvonen, Eveliina Arponen, Riitta Hari, Iiro P Jääskeläinen, Mikko Sams, Lauri Nummenmaa

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 80 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
80citing papers in PubMed, 1 pooled it
23.4field-weighted citation impact, top 1% 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

80 citing papers in PubMed, 1 synthesis or guideline pooled it, 209 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Trial
  6. Expressing emotions through music.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
    Review
  7. Humor Training and Diabetes: An Adjunct to Treatment.American journal of lifestyle medicine · 2026
    Article
  8. Article
  9. Article
  10. Article
  11. Aberrant type 2 dopamine and mu-opioid receptor availability in autism spectrum disorder.European journal of nuclear medicine and molecular imaging · 2026
    Article
  12. Article
  13. Review
  14. Pleasurable music activates cerebral µ-opioid receptors: a combined PET-fMRI study.European journal of nuclear medicine and molecular imaging · 2025
    Article
  15. Article
  16. Article
  17. Review
  18. Childhood family environment and μ-opioid receptor availability in vivo in adulthood.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2025
    Article
  19. Review
  20. Why friendship and loneliness affect our health.Annals of the New York Academy of Sciences · 2025
    Review

20 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 2 countries.

Sandra ManninenTurku PET Centre, University of Turku, 20520 Turku, Finland.
Lauri TuominenTurku PET Centre, University of Turku, 20520 Turku, Finland.
Robin I DunbarDepartment of Neuroscience and Biomedical Engineering, School of Science, Aalto University, 00076 Aalto, Finland.
Tomi KarjalainenTurku PET Centre, University of Turku, 20520 Turku, Finland.
Jussi HirvonenTurku PET Centre, University of Turku, 20520 Turku, Finland.
Eveliina ArponenTurku PET Centre, University of Turku, 20520 Turku, Finland.
Riitta HariDepartment of Neuroscience and Biomedical Engineering, School of Science, Aalto University, 00076 Aalto, Finland.
Iiro P JääskeläinenDepartment of Neuroscience and Biomedical Engineering, School of Science, Aalto University, 00076 Aalto, Finland.
Mikko SamsDepartment of Neuroscience and Biomedical Engineering, School of Science, Aalto University, 00076 Aalto, Finland.
Lauri NummenmaaTurku PET Centre, University of Turku, 20520 Turku, Finland, latanu@utu.fi.ORCID 0000-0002-2497-9757
University of Turku · FIAalto University · FIUniversity of Oxford · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The size of human social networks significantly exceeds the network that can be maintained by social grooming or touching in other primates. It has been proposed that endogenous opioid release after social laughter would provide a neurochemical pathway supporting long-term relationships in humans (Dunbar, 2012), yet this hypothesis currently lacks direct neurophysiological support. We used PET and the μ-opioid-receptor (MOR)-specific ligand [

Indexed as

Social EnvironmentAdultBrain ChemistryBrain MappingEndorphinsFemaleHumansLaughterMaleObject AttachmentPleasurePositron-Emission TomographyReceptors, Opioid, muYoung AdultEndorphinsOPRM1 protein, humanReceptors, Opioid, mubondingcarfentanilemotionlaughteropioidspositron emission tomography

Identifiers

PMID28536272
PMCPMC6596504
OpenAlexW2619259186

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.