Interoception — the nervous system's sensing, interpretation, and integration of signals originating within the body — occupies an increasingly central position in the depth-psychology corpus, where it functions as the neurobiological substrate linking somatic experience to emotion, self-regulation, and psychopathology. The literature traverses two partially overlapping domains. The first is anatomical and neurophysiological: Craig's landmark redefinition extends interoception beyond visceral signaling to encompass the entire small-diameter afferent system, identifying the anterior insular cortex as the primary interoceptive cortex and the seat of felt subjective experience. The second domain is clinical and therapeutic: Price, Khoury, and Khalsa et al. treat interoceptive awareness as a trainable capacity whose disruption underlies a broad spectrum of psychiatric disorders — from depression and addiction to anxiety and eating pathology. Porges's polyvagal framework and Damasio's somatic-marker tradition supply theoretical scaffolding that positions interoceptive fidelity as prerequisite for adaptive autonomic regulation. Tensions persist: whether interoception is primarily a bottom-up afferent process or a top-down predictive inference (the 'simulation map' debate in Khoury and Farb); whether accuracy, sensibility, and metacognitive insight constitute a unified or dissociable construct (Garfinkel, Khalsa); and how clinical interventions such as MABT, mindfulness, or vagal stimulation can selectively remediate dysfunctional interoceptive processing. What is uncontested is the term's explanatory reach: poor interoceptive awareness correlates with impulsivity, substance use, and emotional dysregulation, making interoception a key target for depth-oriented somatic psychotherapy.
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30 substantive passages
Interoception refers to the process by which the nervous system senses, interprets, and integrates signals originating from within the body, providing a moment-by-moment mapping of the body's internal landscape across conscious and unconscious levels.
This foundational definition, from a consensus roadmap authored by leading interoception researchers, establishes the term's scope and its contributions to homeostasis, emotion, and survival — and identifies interoceptive dysfunction as a transdiagnostic risk factor.
Khalsa, Sahib S., Interoception and Mental Health: A Roadmap, 2018thesis
Interoception refers to the process by which the nervous system senses, interprets, and integrates signals originating from within the body, providing a moment-by-moment mapping of the body's internal landscape across conscious and unconscious levels.
A parallel instance of the Khalsa et al. consensus definition, confirming the multi-author, summit-derived authority behind the roadmap's framing of interoception as clinically actionable construct.
Khalsa, Sahib S., Interoception and Mental Health: A Roadmap, 2018thesis
interoception should be redefined as the sense of the physiological condition of the entire body, not just the viscera. This system is a homeostatic afferent pathway that conveys signals from small-diameter primary afferents that represent the physiological status of all tissues of the body.
Craig's 2002 landmark redefinition expands interoception from visceral sensation to a whole-body homeostatic sensory system, grounding it in the lamina I spinothalamocortical pathway — the conceptual move that opened interoception to modern affective neuroscience.
Craig, A. D., How Do You Feel? Interoception: The Sense of the Physiological Condition of the Body, 2002thesis
the cortical processes that enable us to feel the interoceptive feelings of the body's condition also provide the basis for our awareness of emotional, social, and all other feelings.
Craig argues that the anterior insular cortex, as the primary interoceptive cortex, is the neurobiological seat of all subjective feeling — a claim that directly connects interoception to consciousness and emotional life.
Craig, A.D. Bud, How Do You Feel? An Interoceptive Moment with Your Neurobiological Self, 2014thesis
there is also a distinct interoceptive cortex, which contains the primary cortical representation for both thermoreception and nociception; this finding substantiates the fundamental neurobiological distinctness of interoception.
Craig establishes the neuroanatomical separateness of the interoceptive system from the exteroceptive somatosensory system, supporting the claim that interoception is a biologically distinct and evolutionarily ancient sensory modality.
Craig, A.D. Bud, How Do You Feel? An Interoceptive Moment with Your Neurobiological Self, 2014thesis
Emotion regulation involves a coherent relationship with the self, specifically effective communication between
Price and Hooven's MABT framework situates interoceptive awareness as the essential bridge between embodied self-experience and emotion regulation, proposing that body-oriented therapy can cultivate this capacity systematically.
Price, Cynthia J., Interoceptive Awareness Skills for Emotion Regulation: Theory and Approach of Mindful Awareness in Body-Oriented Therapy (MABT), 2018thesis
interoception research may have important and far-reaching implications for understanding the genesis, development, and treatment of psychiatric disorders. An increased understanding about how interoceptive signals influence a patients' moment-to-moment body experience could help clinicians understand the reciprocal
Khoury frames interoception as an under-recognized but clinically consequential variable in psychiatry, arguing that interoceptive dysregulation is implicated in the origins and maintenance of psychiatric conditions.
Khoury, Nayla M., Interoception in Psychiatric Disorders: A Review of Randomized, Controlled Trials with Interoception-Based Interventions, 2018thesis
the feeling of an emotion is generated by integration of its characteristic peripheral, preautonomic, and central homeostatic activity patterns with the current interoceptive image. Integration with the interoceptive image enables the generation of a vivid feeling that is grounded in the active feeling state of the living body.
Craig's embodiment model holds that emotions are generated by integrating homeostatic patterns with an ongoing interoceptive image — making interoception constitutive of emotional experience rather than merely accompanying it.
Craig, A.D. Bud, How Do You Feel? An Interoceptive Moment with Your Neurobiological Self, 2014thesis
Bodily awareness has been called interoceptive awareness by investigators interested in the effects of cardiorespiratory or visceral sensory activity on human mood, emotion, and performance. The feeling of heartbeat awareness is a quantifiable capacity that is often used as a measure of the capacity of individuals for interoceptive awareness.
Craig operationalizes interoceptive awareness through heartbeat detection as a quantifiable individual-difference variable linked to mood, emotion, and decision-making performance.
Craig, A.D. (Bud), How Do You Feel? An Interoceptive Moment with Your Neurobiological Self, 2015thesis
Interoception is not a simple process but rather has several facets. The act of sensing, interpreting, and integrating information about the state of inner body systems can be related to different elements such as interoceptive attention, detection, discrimination, accuracy, insight, sensibility, and self-report.
Khalsa et al. decompose interoception into multiple dissociable facets — accuracy, insight, sensibility — addressing the taxonomic complexity that has complicated both research and clinical application of the concept.
Khalsa, Sahib S., Interoception and Mental Health: A Roadmap, 2018supporting
Interoception is not a simple process but rather has several facets. The act of sensing, interpreting, and integrating information about the state of inner body systems can be related to different elements such as interoceptive attention, detection, discrimination, accuracy, insight, sensibility, and self-report.
A parallel passage reinforcing the multi-faceted taxonomic model of interoception, noting that most interoceptive processes occur outside conscious awareness and that clinical measurement remains partial and imperfect.
Khalsa, Sahib S., Interoception and Mental Health: A Roadmap, 2018supporting
the capacity to maintain awareness, or move back and forth between cognitive oversight and bodily awareness may be undeveloped. The gentle, coached MABT approach is thus used to facilitate learning, and also helps to build trust and comfort with the material, slowly increasing sensitivity to internal states.
Price describes how MABT targets the graduated cultivation of interoceptive awareness as a clinical skill, addressing the developmental deficits in internal sensing that underlie emotion dysregulation.
Price, Cynthia J., Interoceptive Awareness Skills for Emotion Regulation: Theory and Approach of Mindful Awareness in Body-Oriented Therapy (MABT), 2018supporting
A second main approach to interoceptive regulation involves shifting the desired state by 'updating the expected simulation map to more accurately reflect the immediate sensation' through more contemplative techniques such as using equanimity, curiosity, or acceptance.
Khoury introduces the simulation-map model to explain how mindfulness-based interventions work therapeutically by correcting top-down interoceptive predictions rather than merely attending to bottom-up signals.
Khoury, Nayla M., Interoception in Psychiatric Disorders: A Review of Randomized, Controlled Trials with Interoception-Based Interventions, 2018supporting
Interoceptive accuracy or 'the objective accuracy with which a patient can report internal sensations', can be assessed in behavioral tests such as heartbeat detection, and seems to be altered in some psychiatric conditions.
Khoury reviews evidence that interoceptive accuracy — measurable via heartbeat detection — is selectively impaired in psychiatric conditions including major depression, positioning it as a potential transdiagnostic biomarker.
Khoury, Nayla M., Interoception in Psychiatric Disorders: A Review of Randomized, Controlled Trials with Interoception-Based Interventions, 2018supporting
Interoception may be a contributing factor to impulsive behaviour and, thus, addiction. Substance abuse can negatively impact the brain's ability to process interoceptive information and impact the reward system, leading to decreased sensitivity to natural rewards and increased sensitivity to drugs.
Herman links impaired interoceptive processing to impulsivity and addiction, arguing that disrupted body-signal integration accelerates reward dysregulation and proposing interoceptive retraining as a therapeutic target.
Herman, Aleksandra M., Interoception Within the Context of Impulsivity and Addiction, 2023supporting
Interoception begins with receptors, in different body tissues, for sensing internal state — ergoreceptors. These receptors are designed to convert different forms of chemical and physical stimulation into neural signals for transmission to the spinal cord and brain.
Fogel grounds interoception in peripheral receptor physiology, tracing the path from tissue-level chemoreceptors and mechanoreceptors through spinal cord and brainstem to cortical self-awareness.
Fogel, Alan, Body Sense: The Science and Practice of Embodied Self-Awareness, 2009supporting
All of the interoceptive neural pathways are these small, slow Aδ and C fibers. All these interoceptive fibers go to the same place in the spinal cord, from whence they project to a common location in the brain stem, and from there to a common set of brain regions.
Fogel specifies the neural architecture of interoception — small, slow fibers converging on a shared spinobulbocortical pathway — differentiating it anatomically from the faster exteroceptive proprioceptive system.
Fogel, Alan, Body Sense: The Science and Practice of Embodied Self-Awareness, 2009supporting
Today, the sixth sense is understood as resulting from interoceptors, the sensory nerve receptors that receive and transmit sensations from stimuli originating from the interior of the body.
Ogden contextualizes interoception within somatic psychotherapy, tracing the historical lineage of the 'sixth sense' from Bell and James to contemporary neuroscience and its relevance to trauma treatment.
Ogden, Pat, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006supporting
the dorsal insular cortex contains a sensory representation of the small-diameter afferent activity that relates to the physiological condition of the entire body. This cortical region seems to constitute a primary interoceptive image of homeostatic afferents.
Craig identifies the dorsal insular cortex as the primary interoceptive cortex — a homeostatic image integrating temperature, pain, itch, muscular, visceral, and sensual touch signals — providing the neuroanatomical basis for felt bodily self-awareness.
Craig, A. D., How Do You Feel? Interoception: The Sense of the Physiological Condition of the Body, 2002supporting
a direct cortical image of physical well-being — provides a sound epistemological foundation for integrated approaches to the treatment of pain, metabolic, eating and psychosomatic disorders.
Craig draws out clinical implications of interoceptive cortex findings, arguing they reframe psychosomatic and pain disorders as disorders of homeostatic interoceptive signaling rather than purely tissue or cognitive pathology.
Craig, A. D., How Do You Feel? Interoception: The Sense of the Physiological Condition of the Body, 2002supporting
interoception is not simply about afferent processing. The brain's constant monitoring of the body occurs in service of optimizing homeostatic re
Khalsa et al. argue that interoception is a bidirectional process encompassing efferent top-down regulation alongside afferent bottom-up sensing, requiring multilevel experimental approaches that probe homeostatic perturbation and adaptive response simultaneously.
Khalsa, Sahib S., Interoception and Mental Health: A Roadmap, 2018supporting
At one end of the continuum it is bodily cues and sensations that are the key source and explanation for emotional experience, at the other it is cognitive processes.
Price and Hooven situate interoceptive awareness within the historical debate on the primacy of body versus cognition in emotion, using this continuum to motivate a body-first approach to therapeutic emotion regulation.
Price, Cynthia J., Interoceptive Awareness Skills for Emotion Regulation: Theory and Approach of Mindful Awareness in Body-Oriented Therapy (MABT), 2018supporting
Interoceptive accuracy Reliably discriminating interoceptive signals from noise or competing signals; correct and precise monitoring. Insight Metacognitive awareness or self-knowledge about interoceptive task performance.
Khoury's glossary of interoceptive terms distinguishes accuracy, insight, and attention as separate measurable dimensions, providing a practical taxonomy for clinical trial design and outcome assessment.
Khoury, Nayla M., Interoception in Psychiatric Disorders: A Review of Randomized, Controlled Trials with Interoception-Based Interventions, 2018supporting
Interoceptive cortex also contains representations of less well discriminated and less well localized but affectively distinct feelings from the body, such as itch, isometric and dynamic exercise, muscle ache, deep cramp, nonnoxious esophageal, gastric, or rectal distension.
Craig maps the full interoceptive repertoire of the insular cortex — from sharply discriminated to diffusely affective modalities — demonstrating that interoception encompasses homeostatic emotion and motivational states beyond discrete pain or temperature.
Craig, A.D. Bud, How Do You Feel? An Interoceptive Moment with Your Neurobiological Self, 2014supporting
Under some conditions, I may primarily be aware of interoception, or of emotion, or of my body schema. Hearing of a loved one's death, I may feel the emotion of grief as the primary experience, while my body goes numb (with interoception in the background).
Fogel presents interoception, emotion, and body schema as components of a dynamic, partially overlapping network in which any of the three may foreground or background depending on organismic and environmental context.
Fogel, Alan, Body Sense: The Science and Practice of Embodied Self-Awareness, 2009supporting
The activation in the posterior insular cortex suggests the presence of significant interoceptive input. Remarkably, the time-activity plots show that the activation in the posterior insula on both sides increased almost monotonically during both the 9- and 18-second trials.
Craig presents fMRI evidence of posterior insular cortex engagement during time perception tasks, suggesting that interoceptive input contributes to temporal consciousness — extending the concept beyond bodily homeostasis to subjective time experience.
Craig, A.D. (Bud), How Do You Feel? An Interoceptive Moment with Your Neurobiological Self, 2015supporting
more studies are needed that focus attention on specific aspects of interoception, in terms of measurements used to estimate interoceptive regulation and interventions that seek to enhance it.
Khoury acknowledges the current limitations of the interoception-psychiatry literature — taxonomic inconsistency, measurement variability, and short follow-up — calling for more targeted research designs.
Khoury, Nayla M., Interoception in Psychiatric Disorders: A Review of Randomized, Controlled Trials with Interoception-Based Interventions, 2018aside
the configuration of the body in space changes continuously, and the map of the body represented in the brain changes accordingly. In order to control movement with precision, the body must instantly convey to the brain information on the state of skeletal muscle contraction.
Damasio addresses the evolutionarily older visceral afferent signaling pathway in the context of body mapping, implicitly situating interoception within his broader somatic marker theory of consciousness and decision-making.
Damasio, Antonio, Self Comes to Mind: Constructing the Conscious Brain, 2010aside
compared to the small, slow and unmyelinated interoceptive neurons — are fast, large, and myelinated.
Fogel notes the physiological contrast between fast myelinated proprioceptive fibers and slow unmyelinated interoceptive fibers, relevant to understanding why interoceptive awareness is harder to access and cultivate than proprioceptive body schema.
Fogel, Alan, Body Sense: The Science and Practice of Embodied Self-Awareness, 2009aside
interoceptive processes are one way in which stress can alter the capacity to tune into emotion and hence regulate emotion.
Price and Hooven note that stress-induced alterations in interoceptive processing disrupt emotion regulation, contextualizing MABT as a stress-recovery intervention at the level of body-signal sensitivity.
Price, Cynthia J., Interoceptive Awareness Skills for Emotion Regulation: Theory and Approach of Mindful Awareness in Body-Oriented Therapy (MABT), 2018aside