Please let me know if the following references/sites are helpful to you:
1. Predictive Coding or Evidence Accumulation? False Inference and ...
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0009926Mar 29, 2010 ... In accord with predictive coding models and the free-energy principle, ... Sadaghiani S, Friston KJ, Kleinschmidt A (2010)
2. Predictive coding under the free-energy principle - NCBI - NIH
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2666703/Keywords: generative models, predictive coding, hierarchical, birdsong. Go to: ... on hierarchical inference and empirical Bayes (Friston 2003, 2005; Friston et al.
3. Three Problems for the Predictive Coding Theory of Attention ..
http://mindsonline.philosophyofbrains.com/2015/session4/three-problems-for-the-predictive-coding-theory-of-attention/Sep 19, 2015 ... The predictive coding (PC) theory of attention proposed by Feldman & Friston ( 2010) and defended by Hohwy (2012, 2013)