http://dx.doi.org/10.3389/fpsyg.2013.00710 (Publisher version)
Schwartenbeck, P., Fitzgerald, T. H. B., Dolan, R. J., & Friston, K. (2013). Exploration, novelty, surprise, and free energy minimization. Frontiers in Psychology, 4: 710. doi:10.3389/fpsyg.2013.00710.