Cross-species studies on orbitofrontal control of inference-based behavior

Area of Science:

• Neuroscience
• Cognitive Science
• Animal Behavior

Background:

• Decisions rely on outcome expectations, derived from direct experience or mental simulations.
• Distinguishing between experience-based and inference-based expectations is key to understanding decision-making.

Purpose of the Study:

• To investigate the role of the orbitofrontal cortex (OFC) in outcome inference.
• To differentiate behavior driven by mental simulations from that driven by direct experience.

Main Methods:

• Utilized four tasks from animal learning theory: devaluation, sensory preconditioning, Pavlovian-to-instrumental transfer, and Pavlovian overexpectation.
• Combined these tasks with neural recording and loss-of-function experiments in rodents, nonhuman primates, and humans.

Main Results:

• Orbitofrontal cortex (OFC) activity correlated with inferred outcome expectations.
• An intact OFC is necessary for inference-based behavior and learning.
• OFC is not required for expectations based solely on direct experience.

Conclusions:

• The OFC is critical for behavior guided by inferred outcomes, distinguishing it from experience-based learning.
• These findings highlight the OFC's role in cognitive processes underlying decision-making across species.
• Understanding the OFC's function in inference has implications for psychiatric disorders and their treatment.