Perception, illusions and Bayesian inference.
Descriptive psychopathology makes a distinction between veridical perception and illusory perception. In both cases a perception is tied to a sensory stimulus, but in illusions the perception is of a false object. This article re-examines this distinction in light of new work in theoretical and computational neurobiology, which views all perception as a form of Bayesian statistical inference that combines sensory signals with prior expectations. Bayesian perceptual inference can solve the 'inverse optics' problem of veridical perception and provides a biologically plausible account of a number of illusory phenomena, suggesting that veridical and illusory perceptions are generated by precisely the same inferential mechanisms.
South London and Maudsley NHS Foundation Trust, London, UK.
Matthew M
MM
Nour
Joseph M
JM
Nour
D001499:Bayes Theorem; D006801:Humans; D007088:Illusions / Q000502:physiology*; D008297:Male; D010465:Perception / Q000502:physiology*; D013850:Thinking