Nyāya Pramānas, Laukika and Alaukika

Nyāya Pramānas are the means or sources of valid knowledge (pramā) according to the Nyāya school of Hindu philosophy. Perception (Pratyaksha) is one of the four main pramānas, and it is further divided into Laukika (ordinary) and Alaukika (extraordinary) perception.

Laukika (Ordinary) Perception:
Laukika Pratyaksha refers to the direct, ordinary perception of objects through the senses. It involves the direct contact between the sense organs (indriyas) and their respective objects. It is further classified into:

• Bahya Pratyaksha (External Perception): Perception of external objects through the five external sense organs (sight, hearing, smell, taste, touch). For example, seeing a tree, hearing a sound, smelling a flower.
• Manasa Pratyaksha (Internal Perception): Perception of internal states and qualities such as pleasure, pain, desire, hatred, and knowledge, through the mind (manas).

Alaukika (Extraordinary) Perception:
Alaukika Pratyaksha refers to extraordinary or supernormal perception, where the senses perceive objects or qualities that are not ordinarily accessible through direct contact. It is of three types:

• Sāmānyalakṣaṇa Pratyakṣa: The perception of the universal (sāmānya) through the perception of an individual instance. For example, perceiving "cowness" (the universal quality of being a cow) by seeing a particular cow. This allows for the knowledge of all cows, past, present, and future.
• Jñānalakṣaṇa Pratyakṣa: The perception of an object through the knowledge (jñāna) of another object. It involves the revival of past impressions or knowledge. For example, seeing a piece of sandalwood and immediately perceiving its fragrance, even without smelling it directly, because of prior knowledge and association.
• Yogaja Pratyakṣa: The intuitive and direct perception of all objects, past, present, and future, subtle or remote, by yogis (ascetics) who have attained a high level of concentration and spiritual power. This perception is a result of intense meditation and spiritual discipline.