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Related Experiment Video

Updated: Jun 13, 2025

Pavlovian Conditioned Approach Training in Rats

Pavlovian Conditioned Approach Training in Rats

Published on: February 4, 2016

The interoceptive origin of reinforcement learning.

Lilian A Weber¹, Debbie M Yee², Dana M Small³

¹Department of Psychiatry, University of Oxford, Oxford, UK; Wellcome Centre for Integrative Neuroimaging (WIN), Department of Experimental Psychology, University of Oxford, Oxford, UK.

Trends in Cognitive Sciences

|June 11, 2025

Summary

Biological rewards, crucial for motivated behavior, originate internally during digestion, not just sensory pleasure. This suggests a new view of reinforcement learning based on physiological needs.

Keywords:

allostasis dopamine homeostasis interoception striatum value

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Last Updated: Jun 13, 2025

Pavlovian Conditioned Approach Training in Rats

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Published on: February 4, 2016

The Double-H Maze: A Robust Behavioral Test for Learning and Memory in Rodents

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Studying Food Reward and Motivation in Humans

Studying Food Reward and Motivation in Humans

Published on: March 19, 2014

Area of Science:

Neuroscience
Behavioral Economics
Physiology

Background:

Reinforcement learning traditionally focuses on how external rewards shape behavior.
The origin and nature of primary rewards remain incompletely understood.

Purpose of the Study:

To investigate the internal, subliminal origins of reward signals.
To propose a revised reinforcement learning framework incorporating biological reward mechanisms.

Main Methods:

Conceptual analysis integrating findings from neuroscience, physiology, and learning theory.
Theoretical framework development.

Main Results:

The primary reward signal for food is generated internally during digestion.
This signal operates subliminally, influencing motivated behavior.
Biological rewards are state-dependent evaluations of physiological impact.

Conclusions:

A paradigm shift is needed from sensory gratification to physiological state-dependent reward evaluation.
A revised reinforcement learning model should incorporate subliminal, internal biological rewards and their link to goals.