Related Experiment Video
Updated: May 7, 2025
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Comprehensive Profiling of Dopamine Regulation in Substantia Nigra and Ventral Tegmental Area
Published on: August 10, 2012
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Cortical VIP neurons as a critical node for dopamine actions.
Jung Won Bae1, Jee Hyun Yi1, Seo Yeon Choe1
1Center for Synaptic Brain Dysfunctions, Institute for Basic Science, Daejeon 34141, Korea.
Science Advances
|January 1, 2025
Summary
Prefrontal dopamine modulates working memory via vasoactive intestinal polypeptide (VIP) neurons and D1 receptors. Targeting these VIP neurons and D1 receptors is crucial for cognitive functions like memory.
Area of Science:
- Neuroscience
- Cognitive Neuroscience
- Prefrontal Cortex Function
Background:
- Dopamine's role in prefrontal cortex cognitive functions is established, but mechanisms are unclear.
- Vasoactive intestinal polypeptide (VIP)-expressing neurons are implicated in prefrontal cortex circuitry.
- D1 receptors (D1Rs) are key targets for dopamine signaling in the brain.
Purpose of the Study:
- To investigate the role of prefrontal VIP neurons and their D1Rs in working memory.
- To elucidate the mechanisms of dopamine modulation in working memory.
- To examine laterality-dependent effects of dopamine on neural activity and behavior.
Main Methods:
- Utilized a delayed match-to-sample task in mice.
- Employed selective knockdown of D1Rs in VIP neurons.
- Measured dopamine release dynamics and neuronal activity during cognitive tasks.
Main Results:
- VIP neurons significantly contributed to working memory signals.
- Inactivation of VIP neurons or knockdown of D1Rs in these neurons impaired working memory performance.
- Dopamine release dynamics varied with target location, and its stimulation showed laterality-dependent effects on response bias and neuronal selectivity.
Conclusions:
- Prefrontal VIP neurons and their D1Rs are critical for supporting working memory.
- Dopamine modulates prefrontal activity and behavior in a laterality-dependent manner.
- These findings illuminate dopamine-driven neural processes underlying higher-order cognition.
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