# Predictive coding: a theoretical and experimental review

- **Authors**: S. J. Egner, C. Summerfield
- **Year**: 2013
- **Summary**: This paper reviews the theory of predictive coding, a specific neurobiological model of how the brain might implement Bayesian inference. It details the hierarchical process where top-down predictions are compared with bottom-up sensory signals, and only the 'prediction error' is propagated. This is a highly efficient coding scheme for memory, as it prioritizes novel and unexpected information.
- **Link**: https://www.frontiersin.org/articles/10.3389/fnins.2013.00260/full