An Active Inference Approach to Interoceptive Psychopathology

Area of Science:

• Neuroscience
• Psychiatry
• Cognitive Science

Background:

• Interoception is the nervous system's sensing and integration of internal body signals.
• Active inference theory posits that brain processes sensory input using prior expectations.
• Understanding interoceptive processing is crucial for explaining mental health conditions.

Purpose of the Study:

• To propose a framework for interoceptive psychopathology based on dysfunctions in predictive processing.
• To explore how hyperprecise priors and context rigidity contribute to mental illness.
• To discuss potential therapeutic interventions targeting interoceptive processing.

Main Methods:

• This is a review article, synthesizing existing research on interoception and active inference.
• Theoretical framework development based on principles of predictive coding and Bayesian brain hypothesis.
• Discussion of potential clinical manifestations and therapeutic avenues.

Main Results:

• Interoceptive psychopathology may arise from hyperprecise priors (overly strong expectations of bodily change).
• Context rigidity (difficulty adjusting expectations to environmental changes) is identified as a key dysfunction.
• These dysfunctions can lead to a distorted internal bodily model, contributing to mental illness.

Conclusions:

• Abnormal interoceptive processing, characterized by rigid and overly precise expectations, is linked to mental illness.
• Interventions aimed at modifying interoceptive processing may help individuals develop more accurate internal state models.
• This framework offers a novel perspective on the neurobiological underpinnings of psychopathology.