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Active inference, sensory attenuation and illusions.

Harriet Brown1, Rick A Adams, Isabel Parees

  • 1Institute of Neurology, The Wellcome Trust Centre for Neuroimaging, UCL, 12 Queen Square, London, WC1N 3BG, UK, harriet.brown.09@ucl.ac.uk.

Cognitive Processing
|June 8, 2013
PubMed
Summary
This summary is machine-generated.

Active inference explains how we minimize prediction errors by adjusting perceptions or actions. This model links sensory attenuation during movement to illusions of agency and neurological conditions like schizophrenia.

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Computational Psychiatry

Background:

  • Active inference posits that the brain minimizes prediction errors to optimize behavior.
  • Action and perception are coupled, allowing individuals to either update predictions or alter sensory input.

Purpose of the Study:

  • To explain the neurobiological mechanisms underlying the coupling of action and perception.
  • To investigate the role of sensory evidence attenuation in movement and agency attribution.
  • To link active inference to psychophysical phenomena and neurological disorders.

Main Methods:

  • The study utilizes the framework of active inference to model sensorimotor control.
  • It proposes that minimizing proprioceptive prediction error during movement involves attenuating sensory evidence precision.
  • The model's predictions are compared with empirical findings on sensory attenuation and the force-matching illusion.

Main Results:

  • Active inference explains sensory attenuation as a Bayes-optimal strategy to resolve conflicts between action and perception.
  • The model accurately reproduces empirical data on the force-matching illusion.
  • Disrupting sensory attenuation leads to the loss of the force-matching illusion and the emergence of false agency attribution.

Conclusions:

  • Active inference provides a unified account of sensory attenuation, agency attribution, and related illusions.
  • The framework links neuromodulatory control of sensory precision to these phenomena.
  • It offers a functional explanation for motor and inferential deficits in conditions like schizophrenia and Parkinsonism.