Learning & Behavior https://doi.org/10.3758/s13420-017-0309-7 OUTLOOK Dominic M. Dwyer Psychonomic Society, Inc. 2018 Summary Powers et al. (2017, Science, 357(6351), 596–600) report that Pavlovian conditioning can result in the perception of a stimulus in its absence, and that this effect is related to hallucinations outside the laboratory. Considered alongside similar studies in animals, this suggests that associatively produced perceptual processing offers a means to study hallucination-like behaviour in the animal laboratory. . . . . Keywords Mediated conditioning Sensory preconditioning Psychosis Schizophrenia Animal models One of the most well-known associative learning effects is overlapped with tone-responsive brain regions, supporting the Pavlovian conditioning: pairing a neutral stimulus (CS; con- idea that the tone was actually perceived despite its absence. ditioned stimulus) with a motivationally relevant stimulus Activity on these trials also overlapped with a network of brain (US; unconditioned stimulus) results in the CS alone subse- regions previously implicated in hallucinations. Additional anal- quently eliciting conditioned responses (CR). Despite is ubiq- ysis of the behavioural data using a hierarchical Bayesian model, uity, this superficially simple procedure can be surprising and with a critical parameter being the weighting of prior beliefs highly informative. While hallucinations (sensory perceptions relative to current sensory input
Learning & Behavior – Springer Journals
Published: Feb 5, 2018
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