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      Interoception: the sense of the physiological condition of the body

      Current Opinion in Neurobiology

      Elsevier BV

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          Abstract

          Converging evidence indicates that primates have a distinct cortical image of homeostatic afferent activity that reflects all aspects of the physiological condition of all tissues of the body. This interoceptive system, associated with autonomic motor control, is distinct from the exteroceptive system (cutaneous mechanoreception and proprioception) that guides somatic motor activity. The primary interoceptive representation in the dorsal posterior insula engenders distinct highly resolved feelings from the body that include pain, temperature, itch, sensual touch, muscular and visceral sensations, vasomotor activity, hunger, thirst, and 'air hunger'. In humans, a meta-representation of the primary interoceptive activity is engendered in the right anterior insula, which seems to provide the basis for the subjective image of the material self as a feeling (sentient) entity, that is, emotional awareness.

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          Author and article information

          Journal
          Current Opinion in Neurobiology
          Current Opinion in Neurobiology
          Elsevier BV
          09594388
          August 2003
          August 2003
          : 13
          : 4
          : 500-505
          Article
          10.1016/S0959-4388(03)00090-4
          12965300
          © 2003

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