Twelve fields

twelve fields (dvādaśa-āyatana, 十二處, 十二入). A sentient being is composed of the twelve fields:

the six faculties (eye, ear, nose, tongue, body, and mental faculty [manas]) and their six objects (sights, sounds, scents, flavors, tactile sensations, and mental objects). The six faculties are also called the six internal fields, and their objects are called the six external fields. The Consciousness-Only School calls the latter “projected appearances” (影像相分). And modern neurologists recognize that percepts are “brain representations” (see eighteen spheres).

Source

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