Process of Consciousness and Matter - Abhidhamma.com

I. CONSCIOUSNESS AND ITS FACTORS
Further Classifications
Vedanā-Feeling
Vedanā (feeling) is a universal type of cetasika (mental state) and
is very important in our lives. It is said, “Sabbe dhammā vedanā
samodhānā”, which means “all states are included in feeling.” This
needs to be understood in the sense that feeling is common to all
experience. Whatever is experienced through our six senses, seeing,
hearing and so forth is defined as feeling. Therefore, it is said, “life is
nothing but feeling.” Feeling can be analysed as being either threefold
or fivefold. When feeling is analysed in terms of its affective quality it
is threefold:
I. Sukha - Pleasant feeling.
II. Dukkha - Unpleasant feeling.
III. Adukkha-masukha - Neither-unpleasant-nor-pleasant feeling.
In this classification, sukha implies a pleasant feeling either in the
mind or in the body. Dukkha implies an unpleasant feeling either in
mind or in body.
When feeling is analysed in terms of its governing faculty
(indriya) it is fivefold. In this classification sukha (pleasant feeling) is
divided into somanassa (joy) and sukha (pleasure). On the other hand,
dukkha (unpleasant feeling) is divided into domanassa (displeasure)
and dukkha (pain), whereas the neither-unpleasant-nor-pleasant
feeling becomes identified with upekkhā (equanimity) or a neutral
feeling.
I. Sukha - pleasure
II. Dukkha - pain
III. Somanassa - joy
IV. Domanassa - displeasure
V. Upekkhā - equanimity
The aforementioned types of feeling are called “Indriya”
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