Buddha Abhidhamma - Ultimate Science - BuddhaNet

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4 Jivhàyatana – jivhà-pasàda – tongue-base (sensitive part
of the tongue),
5 Kàyàyatana – kàya-pasàda – body-base (sensitive part of
the body),
6 Mànàyatana – 89 or 121 cittas – mind-base.
b Bàhiràyatana (six external bases)
1 Råpàyatana – vaõõa – visible object
2 Saddàyatana – sadda – sound
3 Gandhàyatana – gandha – odour
4 Rasàyatana – rasa – taste
5 Phoññhàbbhàyatana – pathavã, tejo, vàyo – tangible object
6 Dhammàyatana – mind-object consisting of 52 cetasikas,
16 sukhuma-råpas and Nibbàna.
Notes:
1 The six internal bases consist of the five physical senseorgans
and consciousness. Manàyatana is a collective
term for all consciousness.
2 The six external bases consist of the six sense-objects.
Dhammàyatana is a little short of dhammà-rammaõa as it
does not contain cittas, pasàda-råpas, and concepts. Cittas
and pasàda-råpas are already described as the six internal
bases whereas concepts do not belong to realities, so
they are not included in dhammàyatana.
3 All cittas, all cetasikas, all råpas and Nibbàna are included
in the 12 àyatanas.
4 Cognitive processes arise from the contact between
internal and external bases. When the visible object
strikes the eye-base, cakkhu-dvàra vãthi arises. When the