Indriya Agni
Five specialized agnis in each sensory pathway that digest, absorb, assimilate, and transform sensory perception into knowledge.
Function of Indriya Agni
Indriya agni comprises five specialized agnis related to the five senses. Indriya means the doors of perception — the five sensory pathways: auditory (sound), tactile (touch), visual (vision), gustatory (taste), and olfactory (smell). In each sensory pathway, indriya agni relates to enzymes and neurotransmitters that digest, absorb, assimilate, and transform sensory perception into knowledge.
The indriya agnis are a specialized component of sadhaka agni (the agni component of sadhaka pitta). The bhuta agnis break down elemental components of food, then the indriya agnis further transform the five elements into their tanmatra (sensory object) components to nourish sadhaka pitta and the five tanmatras in the mind. For example, gandha agni digests odor (gandha tanmatra) and brings the knowledge of that smell to sadhaka pitta.
When indriya agni is impaired, there is impairment of sensory perception. For instance, if shabda agni (sound agni) becomes low, as often occurs in old age, hearing is diminished.
Source: Textbook of Ayurveda: Fundamental Principles, Chapter Four: Agni, The Digestive Fire
Definition
Indriya agni is the fire component present in each of the five sensory faculties. It converts raw sensory input into understanding, experience and knowledge.
Source: Textbook of Ayurveda: Fundamental Principles, Glossary
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