How VTA brain cells that release both GABA and glutamate affect motivation and mood
Official title: Balancing motivation through VTA GABA/Glutamate co-transmission
Funded at Dartmouth College · NIH-11176347 · Data updated 2026-11-12
This project looks at how a group of brain cells that release two chemicals controls motivation and mood, with the goal of helping people with depression or bipolar disorder.
Quick facts
| Grant type | NIH-funded research |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Dartmouth College NIH-funded |
| Lab location | 1 site (Hanover, United States) |
| Project start | September 1, 2024 |
| Project end | August 31, 2027 |
| Funding year | 2025 |
| Award (this year) | $248,999 |
| NIH project number | 5R00MH130688-04 |
| Project ID | NIH-11176347 on NIH RePORTER |
Who could benefit from this research
✓Could help
People with major depressive disorder or bipolar affective disorder who are interested in contributing to research that could inform future treatments would be the most relevant group.
✕Less likely to help
People seeking immediate treatment changes or those without mood disorders are unlikely to see direct benefits because this is lab-based, preclinical work aimed at long-term understanding.
What this research studies
From my perspective as a patient, researchers are focusing on a small brain area called the ventral tegmental area (VTA) that contains neurons which release both inhibitory (GABA) and excitatory (glutamate) signals. They will use in vivo calcium imaging to watch the activity of these VTA terminals that connect to the amygdala while animals behave in situations involving reward and aversion. The team will also manipulate these pathways to see how changes in their activity alter motivated behavior and mood-like responses. Findings are intended to reveal circuit mechanisms that could guide future treatments for depression and bipolar disorder.
Why it matters
Potential benefit: If successful, this work could point to new brain targets for therapies to better control motivation and mood in depression and bipolar disorder.
How similar studies have gone: Prior animal studies show VTA circuits shape reward and aversion, but the specific role of neurons that co-release GABA and glutamate is relatively new and less well tested.
Where this research is happening
-
Dartmouth College
Hanover, United States Active
Researchers
- Principal investigator: Warlow, Shelley May — Dartmouth College
- Study coordinator: Warlow, Shelley May
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About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page.