Evidence map›Paper›PMID 22648957›Full record

Trial reportSocial cognitive and affective neuroscience2013

Oxytocin enhances pupil dilation and sensitivity to 'hidden' emotional expressions.

Siri Leknes, Johan Wessberg, Dan-Mikael Ellingsen, Olga Chelnokova, Håkan Olausson, Bruno Laeng

2 registry-linked trialsOpen access · hybridAbstract readClinical Trial
In one paragraph

Trial report in Social cognitive and affective neuroscience, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 59 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed, 2 pooled it
14.0field-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.

NCT01983514 phase1completednot on this map

Intranasal (Optinose Bidirectional Nose-to-brain Device) Versus Intravenous Slow Infusion of Oxytocin - a Randomized, Placebo- Controlled Double-blind, Double-dummy 4-period Cross-over Study in Healthy Adult Volunteers Evaluating Brain Functional Magnetic Resonance Imaging Changes, Cognitive Response, Heart Rate Variability, Plasma Pharmacokinetics and Saliva Concentration After Single-dose Oxytocin 8 or 24 International Units (IU) Intranasally or 1 IU as Slow Intravenous Infusion

TypeinterventionalSponsorOptiNose ASRan2013 to 2014Enrolled19ConditionsHealthy Male AdultsArms8IU intranasal oxytocin, 24 IU intranasal oxytocin, 1 IU intravenous oxytocin, Placebo
NCT02414503 phase1 / phase2completednot on this mapstarted 2015, after this paper: background citation

A Randomized, Placebo Controlled, Double-blind, 3-period Cross-over Study in Adult Patients With Autism Spectrum Disorders Evaluating Cognitive Response After Single- Dose Oxytocin 8 or 24 IU Intranasal Administration Using the OptiNose Bi-directional Nose-to-brain Device

TypeinterventionalSponsorOptiNose ASRan2015 to 2016Enrolled17ConditionsAutism Spectrum DisorderArms8IU intranasal oxytocin, 24IU intranasal oxytocin, Placebo, OptiNose Breath Powered Bi
3 · Its place in the literature

Who cites it

59 citing papers in PubMed, 2 syntheses or guidelines pooled it, 153 citations in OpenAlex.

  1. Pooled it
  2. The impact of a single administration of intranasal oxytocin on the recognition of basic emotions in humans: a meta-analysis.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2013
    Pooled it
  3. Trial
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  11. Distinct oxytocin effects on belief updating in response to desirable and undesirable feedback.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Trial
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  13. Oxytocin-augmented social cognitive skills training in schizophrenia.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2014
    Trial
  14. Trial
  15. Review
  16. How does oxytocin modulate human behavior?Molecular psychiatry · 2025
    Review
  17. Article
  18. Touch as emotion regulation.Frontiers in psychology · 2025
    Review
  19. Article
  20. Article
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

6 authors at 2 institutions in 2 countries.

Siri LeknesDepartment of Psychology, University of Oslo, Postboks 1094, Blindern 0317, Oslo, Norway. siri.leknes@psykologi.uio.no.
Johan Wessberg
Dan-Mikael Ellingsen
Olga Chelnokova
Håkan Olausson
Bruno Laeng
University of Gothenburg · SEUniversity of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Sensing others' emotions through subtle facial expressions is a highly important social skill. We investigated the effects of intranasal oxytocin treatment on the evaluation of explicit and 'hidden' emotional expressions and related the results to individual differences in sensitivity to others' subtle expressions of anger and happiness. Forty healthy volunteers participated in this double-blind, placebo-controlled crossover study, which shows that a single dose of intranasal oxytocin (40 IU) enhanced or 'sharpened' evaluative processing of others' positive and negative facial expression for both explicit and hidden emotional information. Our results point to mechanisms that could underpin oxytocin's prosocial effects in humans. Importantly, individual differences in baseline emotional sensitivity predicted oxytocin's effects on the ability to sense differences between faces with hidden emotional information. Participants with low emotional sensitivity showed greater oxytocin-induced improvement. These participants also showed larger task-related pupil dilation, suggesting that they also allocated the most attentional resources to the task. Overall, oxytocin treatment enhanced stimulus-induced pupil dilation, consistent with oxytocin enhancement of attention towards socially relevant stimuli. Since pupil dilation can be associated with increased attractiveness and approach behaviour, this effect could also represent a mechanism by which oxytocin increases human affiliation.

Indexed as

Administration, IntranasalAdultAttentionDouble-Blind MethodEmotionsFacial ExpressionFemaleHumansMaleOxytocinPupilRecognition, PsychologyYoung AdultOxytocinemotionempathyhormoneslocus coeruleuspupillometrysocial

Identifiers

PMID22648957
PMCPMC3791062
OpenAlexW2148376016

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.