Effect of Oxytocin on Masked Facial Expressions: an fMRI Study

Early Phase 1

Completed

• Conditions: Facial Expressions
• Interventions: Drug: Oxytocin; Drug: Placebo

• Registration Number: NCT02183948
• Lead Sponsor: University of Electronic Science and Technology of China

Brief Summary

The purpose is to test whether oxytocin has an effect on masked facial expressions

Detailed Description

The neuropeptide oxytocin (OXT) has been shown to modulate several aspects of human social cognition. Although the exact mechanisms behind these effects remain unclear, recent research suggests that OXT modulates the perception of cues that are important for interpersonal processing, particularly emotional facial expressions. Using a backward masking procedure and functional magnetic resonance imaging, we investigated the modulatory effects of intranasal OXT on the processing of sub-liminally presented emotional faces. In a double-blind placebo-controlled between-subject pharmaco-fMRI experiment healthy volunteers received either 24IU of intranasal oxytocin or placebo 45mins before they were presented emotional (happy, angry, fearful, sad, disgusting) faces and mirror-reversed neutral faces masked by neutral faces of the same individual. To ensure attentional processing of the faces subjects were required to perform a simple gender decision task in the scanner and a recognition memory task afterwards. All subjects were additionally assessed for their state and trait anxiety and depression as well as empathy. For the analysis, we will use matlab, SPM and SPSS to conduct structural ROI analysis and two Sample t test.

Study Timeline

• Study Start: 2014-06
• Study First Submitted: 2014-06-30
• Study First Submitted QC: 2014-07-07
• Study First Posted: 2014-07-08
• Primary Completion: 2014-12
• Study Completion: 2014-12
• Status Verified: 2017-03
• Last Update Submitted: 2017-03-04
• Last Update Posted: 2017-03-07

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 86

Inclusion Criteria

• Healthy subjects, no smoke or drink alcohol, coffee or other stimulants during the day before Experiment.

Exclusion Criteria

• history of head injury; pregnancy; uterine cavity operations were took within one year; medical or psychiatric illness; rhinitis in case they may not fully absorb the spray.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
oxytocin	Oxytocin	nasal spray
Placebo	Placebo	nasal spray

Primary Outcome Measures

Name	Time	Method
Number of participants with neuro activity to facial expressions	one week