Definition
Interoception is the perception of the body’s internal state — heartbeat, breathing, temperature, hunger, tension, pain, arousal, and more. It is a distinct sense, with its own neural architecture centered in the insular cortex.
Why it matters
Interoception underlies self-awareness, emotion, decision-making, and mental health. People with strong interoceptive accuracy tend to know what they feel and why. People with disrupted interoception — through trauma, illness, dissociation, or neglect — often live at a distance from their own experience.
The Science
Craig, Critchley, and colleagues have mapped the interoceptive pathways from body to insula. Barrett’s work links interoception to emotional construction. Interoceptive dysregulation has been implicated in anxiety, depression, eating disorders, chronic pain, and PTSD.
The NSI Perspective
Nervous System Intelligence treats interoception as the ground floor of self-knowledge. Before we can regulate, we must notice. Before we can notice, we must feel. Interoceptive literacy is a foundational skill — not a spiritual accomplishment.
Clinical Implications
Interoception can be assessed and trained. Clinicians can invite patients to describe internal sensation without evaluation, and to distinguish sensation from interpretation. This is often the first step in trauma, pain, and anxiety treatment.
Practical Application
Once a day, pause and ask: “What am I feeling in my body right now?” Do not solve it. Do not fix it. Simply describe it in words. Over weeks this practice widens the interoceptive channel.
References
- 1.Craig AD. How do you feel? Interoception: the sense of the physiological condition of the body. Nat Rev Neurosci. 2002;3(8):655–666.
- 2.Critchley HD, Garfinkel SN. Interoception and emotion. Curr Opin Psychol. 2017;17:7–14.
- 3.Khalsa SS, et al. Interoception and mental health: a roadmap. Biol Psychiatry Cogn Neurosci Neuroimaging. 2018;3(6):501–513.