Computational psychiatry: from synapses to sentience

K Friston - Molecular psychiatry, 2023‏ - nature.com
This review considers computational psychiatry from a particular viewpoint: namely, a
commitment to explaining psychopathology in terms of pathophysiology. It rests on the …

The free energy principle made simpler but not too simple

K Friston, L Da Costa, N Sajid, C Heins, K Ueltzhöffer… - Physics Reports, 2023‏ - Elsevier
This paper provides a concise description of the free energy principle, starting from a
formulation of random dynamical systems in terms of a Langevin equation and ending with a …

[HTML][HTML] A step-by-step tutorial on active inference and its application to empirical data

R Smith, KJ Friston, CJ Whyte - Journal of mathematical psychology, 2022‏ - Elsevier
The active inference framework, and in particular its recent formulation as a partially
observable Markov decision process (POMDP), has gained increasing popularity in recent …

The empirical status of predictive coding and active inference

R Hodson, M Mehta, R Smith - Neuroscience & Biobehavioral Reviews, 2024‏ - Elsevier
Research on predictive processing models has focused largely on two specific algorithmic
theories: Predictive Coding for perception and Active Inference for decision-making. While …

Predictive coding and stochastic resonance as fundamental principles of auditory phantom perception

A Schilling, W Sedley, R Gerum, C Metzner, K Tziridis… - Brain, 2023‏ - academic.oup.com
Mechanistic insight is achieved only when experiments are employed to test formal or
computational models. Furthermore, in analogy to lesion studies, phantom perception may …

[HTML][HTML] How particular is the physics of the free energy principle?

M Aguilera, B Millidge, A Tschantz, CL Buckley - Physics of Life Reviews, 2022‏ - Elsevier
The free energy principle (FEP) states that any dynamical system can be interpreted as
performing Bayesian inference upon its surrounding environment. Although, in theory, the …

Sophisticated inference

K Friston, L Da Costa, D Hafner, C Hesp, T Parr - Neural Computation, 2021‏ - direct.mit.edu
Active inference offers a first principle account of sentient behavior, from which special and
important cases—for example, reinforcement learning, active learning, Bayes optimal …

[HTML][HTML] Information geometry, fluctuations, non-equilibrium thermodynamics, and geodesics in complex systems

E Kim - Entropy, 2021‏ - mdpi.com
Information theory provides an interdisciplinary method to understand important phenomena
in many research fields ranging from astrophysical and laboratory fluids/plasmas to …

[HTML][HTML] Some interesting observations on the free energy principle

KJ Friston, L Da Costa, T Parr - Entropy, 2021‏ - mdpi.com
Biehl et al.(2021) present some interesting observations on an early formulation of the free
energy principle. We use these observations to scaffold a discussion of the technical …

[HTML][HTML] Memory and Markov blankets

T Parr, L Da Costa, C Heins, MJD Ramstead, KJ Friston - Entropy, 2021‏ - mdpi.com
In theoretical biology, we are often interested in random dynamical systems—like the brain—
that appear to model their environments. This can be formalized by appealing to the …