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The dining room is part of an insula, the equivalent of a city block, that has been excavated in connection with a project to shore up the perimeter between the excavated and unexcavated areas of the city, part of which remains underground.

The DMN and the posterior insula are involved in how people sense their body, the sense of self and their internal reflections.

Legon's study, however, is the first to target the insula and show that focused ultrasound can reach deep into the brain to ease pain.

When repeated in an MRI scanner, functional imaging showed two aggression-related brain regions -- the prefrontal cortex and anterior insula -- that became more active when the men were provoked during the game, but did not become as active in the same situations when the men were sniffing the tears.

For instance, studies have shown that people who experience damage to the insula, part of the brain's salience network, can have a complete remission of their addiction.