About the Authors

Karl Friston


Affiliation The Wellcome Trust Centre of Neuroimaging, University College London, London, United Kingdom

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: KJF. Performed the experiments: KJF. Analyzed the data: KJF. Contributed reagents/materials/analysis tools: KJF. Wrote the paper: KJF.