Insular epilepsy has come into focus quite late in the field of epileptology. This entity was forgotten between the 1960s and 1980s by the last generation of epileptologists who were busy leading the fight for a localization approach and anatomo-electro-clinical correlations. This lengthy period is well documented in the first chapter of this work. This drift may be attributed to various restrictions, mostly technical: the insular cortex does not appear on the surface of the brain but is the seat of a plethoric vascularization that supplies blood to motor fibers in the centrum ovale through its network of perforating arteries. Therefore, it could not be operated without exposing the patient to unreasonable risks for the goal intended. It could not also be explored invasively without the risk of causing a hemorrhage due to the necessity of crossing a triple curtain of pial arteries. The condemnation was heard: “exploring the insula, at best, is useless, and at worst, dangerous.”