Interoception is the brain’s sensing of internal bodily states such as heartbeat, breathing, and gut sensations. It shapes how people perceive bodily signals and assign meaning to them. Research by Sarah Garfinkel at the University of Sussex and Hugo D. Critchley at the University of Sussex differentiates interoceptive accuracy (objective sensing), interoceptive sensibility (self-reported awareness), and interoceptive prediction (expectations about bodily states), showing that mismatches among these dimensions are common in anxiety-related conditions.
Neural mechanisms and evidence
Neuroimaging and clinical research implicate the insula and anterior cingulate cortex as central hubs for integrating bodily input with emotional evaluation. Work by Martin Paulus at the Laureate Institute for Brain Research links altered insula responses and disrupted integration of interoceptive signals to increased worry and hypervigilance in anxiety disorders. These findings suggest that when the brain assigns excessive salience to bodily sensations, normal fluctuations like a faster heartbeat can be interpreted as threat rather than benign variation.
Causes, relevance, and clinical consequences
Several interacting causes contribute to altered interoception in anxiety. Past experiences of panic, culturally mediated beliefs about health, and chronic stress can heighten attention to bodily states and reinforce catastrophic interpretations. Not every person with heightened bodily awareness develops disorder; contextual learning and meaning matter. Consequences include increased avoidance, amplified autonomic reactivity, and maintenance of anxious cycles because misinterpreted sensations provoke further arousal. Clinically, this can manifest across diagnoses from panic disorder to generalized anxiety disorder and social anxiety, shaping symptom expression and treatment response.
Interoceptive processes also have cultural and territorial nuances. Societal norms about emotional expression and bodily awareness influence reporting and coping strategies; for example, cultures that pathologize certain bodily sensations may increase health anxiety or somatic presentations. Environmental stressors such as pollution, noise, or food insecurity can alter baseline bodily states and thus the inputs feeding interoceptive systems.
Implications for practice arise from this evidence base. Interventions that target interoceptive prediction and reappraisal, including interoceptive exposure and somatic-focused cognitive therapies, aim to recalibrate the relationship between sensation and meaning. Ongoing research by the cited investigators continues to refine how targeting interoception can reduce symptom burden and improve functional outcomes.