The insula is folded into several short gyri in front and usually two long gyri behind, separated by the central sulcus of the insula. They lie hidden deep in the lateral sulcus beneath the opercula.
| Location | Deep within the lateral sulcus, covered by the frontal, parietal and temporal opercula |
|---|---|
| Parts |
|
| Connections |
|
| Blood Supply | Middle cerebral artery (insular M2 branches) |
The anterior insula handles body awareness, emotion, taste and decision making; the posterior insula processes pain, temperature and visceral sensations.
Middle cerebral artery strokes often affect the insula, causing disturbances of taste, swallowing, speech, heart rhythm and body awareness. Insular epilepsy can mimic frontal or temporal lobe seizures. The insula has been linked to craving in addiction.
Damage from middle cerebral artery occlusion causing taste, speech, autonomic and sensory disturbances.
Seizures with throat constriction, tingling or autonomic symptoms arising from the insula.
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