This study is looking at how a substance called vasopressin, given as a nasal spray, affects how your brain processes pain. Researchers want to understand if vasopressin can influence how you experience pain, especially after watching someone else experience pain relief. They will use a special type of MRI scan called fMRI (functional magnetic resonance imaging) to see brain activity. To be eligible, you need to be between 18 and 55 years old and speak English. The study aims to see if vasopressin changes brain signals in a specific area (Supplementary Motor Area) during painful stimulation.

Study design

This is an interventional study planning to enroll 56 participants. You would be randomly assigned to receive either intranasal vasopressin or a saline placebo, and both you and the researchers would not know which you received.

What's involved

You would receive intranasal vasopressin or saline before an fMRI experiment, which involves brain scans. You would also watch a video about someone experiencing pain relief.

Compensation

Not stated in the trial record.

Follow-up

The primary endpoint, measuring brain signal changes, is taken on Day 2 during painful stimulations.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.