Which one of the following is not a sense-organ according to classical Indian…

CONCEPT: In Nyaya, the classical Indian school of logic, perception is explained through contact among the self, manas, a sense-organ, and an object. Sense-organs are the instruments through which perception arises.

CONCEPT: Manas is treated as the internal organ, while terms such as caksuh and srotra denote external sense-organs. A term that names a mode of cognition is not itself a sense-organ.

APPLICATION: Manas fits the internal-organ category; caksuh denotes the visual organ; and srotra denotes the auditory organ. Savikalpaka, however, denotes determinate or conceptual perception, not an organ.

CONTRAST:

• Manas names the internal organ involved in perceptual awareness.

• Caksuh names the eye or visual sense-organ.

• Srotra names the ear or auditory sense-organ.

• Savikalpaka names a determinate stage of perception, so it belongs to cognition rather than to sense-organs.

Therefore, the value that is not a sense-organ is Savikalpaka.