Refers to the neural capacity that a Psychic possesses.
Surpassing this limit by 1-20 PSI will result in the Psychic immediately suffering from Psychic Overheat, a debilitating and potentially fatal condition.
Surpassing this limit by 21 or more PSI will result in the Psychic immediately suffering from Psychic Meltdown, not only dooming themselves, but potentially anything an anyone in their immediate vicinity.