The mana lobe (霊力野「ゲート」 reiryoku no / "geeto"?, "spirit power field" / "gate") is an organ found in a person's brain in Tales of Xillia and Tales of Xillia 2. In order for humans to use spirit artes, they must channel their mana as an offering to spirits, an exchange that allows both species to thrive. The mana lobe serves as the conduit of this exchange, as humans draw mana from the organ and communicate with spirits through incantation. The spirits receive the mana, their lifeforce, and apply it to the spell the user wishes to cast through a process known as spirit channeling (精霊術 seireijutsu?).