How serotonin affects aggression and friendly social behavior

Serotonergic modulation of aggressive and prosocial behaviors

NIH-funded research Stanford University · NIH-11238881

This project explores whether serotonin in specific brain circuits can reduce aggression and promote friendly social behavior, which may be relevant to people with autism who have aggression or low frustration tolerance.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionStanford University NIH-funded
Lab location1 site (Stanford, United States)
Project IDNIH-11238881 on NIH RePORTER

What this research studies

From a patient perspective, researchers are studying how serotonin changes whether animals act aggressively or prosocially to learn what might underlie similar problems in autism. They will use light-based tools to control serotonin release and chemical sensors to watch serotonin levels in real time. Tiny head-mounted microscopes will let them see which nerve cells respond, and a frustration task will show how context changes behavior. The goal is to map the cells and timing that shift behavior so future therapies can target them.

Who could benefit from this research

Good fit: People with autism who experience frequent aggression, irritability, or low frustration tolerance would be the most relevant future beneficiaries.

Not a fit: Individuals without social or aggression symptoms, or those seeking immediate clinical treatments, are unlikely to gain direct benefit from this animal-based research.

Why it matters

Potential benefit: If successful, this work could identify specific brain circuits or timing targets that lead to new treatments to reduce aggression and improve social behavior in autism.

How similar studies have performed: Earlier animal studies indicate serotonin can alter aggression and social behavior, but the detailed cell-level and timing mechanisms proposed here are less tested.

Where this research is happening

Stanford, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Conditions Autistic Disorder
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.