期刊
BEHAVIORAL NEUROSCIENCE
卷 136, 期 1, 页码 46-60出版社
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/bne0000492
关键词
reversal learning; reinforcement learning; squirrel monkeys; decision making; behavioral modeling
资金
- NIDA Intramural Research Program
- [R01DA042038]
- [R01NS104834]
- [T32GM007309]
The study found that squirrel monkeys exhibited key behavioral characteristics similar to other species, and the reversal learning task validated their reliability as a model for behavioral flexibility.
Insight into psychiatric disease and development of therapeutics relies on behavioral tasks that study similar cognitive constructs in multiple species. The reversal learning task is one popular paradigm that probes flexible behavior, aberrations of which are thought to be important in a number of disease states. Despite widespread use, there is a need for a high-throughput primate model that can bridge the genetic, anatomic, and behavioral gap between rodents and humans. Here, we trained squirrel monkeys, a promising preclinical model, on an image-guided deterministic reversal learning task. We found that squirrel monkeys exhibited two key hallmarks of behavior found in other species: integration of reward history over many trials and a side-specific bias. We adapted a reinforcement learning model and demonstrated that it could simulate squirrel monkey-like behavior, capture training-related trajectories, and provide insight into the strategies animals employed. These results validate squirrel monkeys as a model in which to study behavioral flexibility.
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