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Dopaminergic signaling supports auditory social learning
Nihaad Paraouty1, Catherine R Rizzuto2, Dan H Sanes2,3,4,5
1Center for Neural Science, New York University, 4 Washington Place, New York, NY, 10003, USA. np64@nyu.edu.
Scientific Reports
|June 24, 2021
Summary
Dopamine plays a key role in social learning. This study shows that dopamine receptor activity enhances skill acquisition in gerbils, even without explicit rewards, highlighting a dopamine-dependent reward signal.
Area of Science:
- Neuroscience
- Behavioral Science
- Animal Behavior
Background:
- Explicit rewards, engaging the dopaminergic system, are common learning tools.
- Social learning can improve skills without explicit rewards, but its underlying mechanisms are less understood.
Purpose of the Study:
- To investigate the role of the dopaminergic system in social learning of an auditory discrimination task in gerbils.
- To determine if dopamine signaling is essential for learning from a skilled demonstrator.
Main Methods:
- Gerbils were exposed to a skilled demonstrator performing an auditory task.
- Pharmacological manipulation (dopamine receptor antagonist/agonist) and yoked food rewards were used during exposure.
- Observer performance was assessed during subsequent individual practice sessions.
Main Results:
- Gerbils receiving yoked rewards learned faster; this effect was blocked by a D1/D5 antagonist.
- The D1/D5 antagonist impaired learning in both rewarded and unrewarded observers.
- Administering a D1/D5 agonist during social exposure accelerated learning, even without rewards.
Conclusions:
- A dopamine-dependent reward signal contributes to social learning.
- Dopamine signaling is crucial for enhancing skill acquisition through social observation.
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