The Influence of Oxytocin on Socio-communicative Sensitivity

July 19, 2022 updated by: Kaat Alaerts, KU Leuven

Monitoring the Influence of Oxytocin on Socio-communicative Sensitivity Using Fast Periodic Visual Stimulation

Oxytocin (OT) is a neuropeptide that acts as a neurotransmitter and neuromodulator in the brain. Previous studies have shown that intranasal administration of OT improves social cognition and behavior (e.g. emotion recognition). In the current study, we want to gain more insight into the underlying mechanisms by which OT influences emotion recognition. More specifically, we will investigate whether intranasal administration of OT enhances the salience of social (compared to non-social) information and whether it increases the neural sensitivity for subtle socio-emotional cues, by recording scalp electroencephalography (EEG) during Fast Periodic Visual Stimulation (FPVS).

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The present study is a double-blind, randomized, placebo-controlled, crossover clinical trial, in which (approximately 30) neurotypical male adults (18 to 30 years old) will participate. All participants will perform two sessions (OT and placebo), separated by two weeks. For the first session, the participants are randomly assigned to the placebo or the OT condition. Syntocinon nasal spray will be used for intranasal administration.

In each session, we will measure the neural salience/sensitivity for socio-emotional information, by recording EEG during FPVS. Participants simply have to press a button when the fixation cross turns red, while watching rapidly alternating visual stimuli. Starting 20 minutes after substance intake, four FPVS paradigms are administered in randomized order:

  1. A frequency-tagging FPVS paradigm, to measure the salience of social versus non-social stimuli.
  2. The oddball face detection paradigm, to assess the neural sensitivity to faces embedded in a series of objects.
  3. The oddball identity discrimination task, to examine the ability to discriminate between faces with a different identity.
  4. The oddball expression generalization task, to investigate the sensitivity for facial emotional expressions embedded within neutral faces with varying identities.

After two FPVS paradigms, a four minutes resting state EEG measure will be performed. At the end of the session, emotion recognition will be measures with the Palermo matching task (65 items).

The primary aim is to investigate whether the performance on each of these paradigms/tasks differs between the OT and the placebo condition. Furthermore, we want to explore whether the effect of OT is influenced by the participant's attachment style, social responsiveness, social phobia, or mood, which will be assessed via self-reported questionnaires.

Study Type

Interventional

Enrollment (Actual)

31

Phase

  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Leuven, Belgium, 3000
        • Biomedical Sciences

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 30 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • age between 18 and 30 years
  • male
  • right-handed
  • typically developing
  • Normal or adjusted-to-normal vision (with glasses or lenses)

Exclusion Criteria:

  • psychiatric disorder
  • neurological disorder (e.g. epilepsy, migraine)
  • color blindness
  • psychoactive medication

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Oxytocin
Syntocinon nasal spray (40 IU/ml; oxytocin, product code RVG 03716) will be used for intranasal administration of a single intranasal dose of 24 international units (IU; 3 puffs of 4 IU per nostril)
Syntocinon nasal spray: single dose of 24IU (3 puffs of 4IU per nostril)
Placebo Comparator: Placebo
Physiological water (sodium chloride (NaCl) solution) Administration via nasal spray
Placebo spray: single dose (3 puffs per nostril).

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
social salience frequency-tagging FPVS
Time Frame: random: 30-70 minutes after nasal spray
EEG recording during simultaneous (superimposed) presentation of social stimuli (faces) and non-social stimuli (objects or houses), at a frequency of 6 and 7.5Hz, respectively (counterbalanced).
random: 30-70 minutes after nasal spray
Oddball face detection FPVS paradigm
Time Frame: random: 30-70 minutes after nasal spray
EEG recording during presentation of objects (at 6 Hz) and faces (inserted as an "oddball" every fifth image, thus at a frequency of 1.2 Hz)
random: 30-70 minutes after nasal spray
Oddball identity discrimination FPVS paradigm
Time Frame: random: 30-70 minutes after nasal spray
EEG recording during presentation of neutral faces of the same person (same identity, presented at 6 Hz) and the face of another person (inserted as an "oddball" every fifth image, thus at a frequency of 1.2 Hz)
random: 30-70 minutes after nasal spray
Oddball expression generalization FPVS paradigm
Time Frame: random: 30-70 minutes after nasal spray
EEG recording during presentation of neutral faces with different identities (at 6 Hz) and faces with an emotional expression (fear, anger, happy; inserted as an "oddball" every fifth image, thus at a frequency of 1.2 Hz)
random: 30-70 minutes after nasal spray

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Emotion recognition: accuracy on the Palermo Matching task (65 items)
Time Frame: 80 minutes after nasal spray (after all EEG measures)
Three faces are shown on the screen. Two of them display the same emotion and the participant has to indicate which face shows a different emotion
80 minutes after nasal spray (after all EEG measures)
resting state EEG
Time Frame: 45-50 minutes after nasal spray (after two FPVS paradigms)
EEG recording, while presenting a fixation cross
45-50 minutes after nasal spray (after two FPVS paradigms)
Social responsiveness: Social Responsiveness Scale (SRS)
Time Frame: Baseline
Self-report version of the SRS. In addition to a Total score reflecting severity of social deficits in the autism spectrum, the SRS generates scores for five Treatment subscales: Social Awareness, Social Cognition, Social Communication, Social Motivation, and Restricted Interests and Repetitive Behavior.
Baseline
Social phobia: Social Phobia Inventory (SPIN)
Time Frame: Baseline
A 17-item questionnaire that screens for, and measures, the severity of social anxiety disorder.
Baseline
Attachment: State Adult Attachment Measure (SAAM)
Time Frame: Baseline
The SAAM measures 3 different aspects of adult attachment: Security, Anxiety, Avoidance. There are 21 Likert-style questions with a score between 1 and 7 (7 for each of the three subscales).
Baseline
Mood: Positive And Negative Affect Schedule (PANAS)
Time Frame: 90 minutes after nasal spray
The Positive and Negative Affect Schedule (PANAS) comprises two mood scales, one that measures positive affect and the other which measures negative affect. It consists of 20 items (10 for each subscale).
90 minutes after nasal spray

Other Outcome Measures

Outcome Measure
Time Frame
side-effect questionnaire
Time Frame: 90 minutes after nasal spray
90 minutes after nasal spray

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Investigators

  • Principal Investigator: Kaat Alaerts, Professor, KU Leuven (Catholic University Leuven)

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

November 21, 2016

Primary Completion (Actual)

May 30, 2017

Study Completion (Actual)

July 30, 2017

Study Registration Dates

First Submitted

March 7, 2017

First Submitted That Met QC Criteria

March 24, 2017

First Posted (Actual)

March 30, 2017

Study Record Updates

Last Update Posted (Actual)

July 22, 2022

Last Update Submitted That Met QC Criteria

July 19, 2022

Last Verified

July 1, 2022

More Information

Terms related to this study

Other Study ID Numbers

  • SingleOT_EEG_S56327

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Undecided

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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