Vikalpa

Vikalpa is a Sanskrit philosophical term used in Hinduism and Buddhism, meaning erroneous conceptualizations ("concepts, judgements, views, and opinions") which are coloured by emotions and desires. In Yogacara, it is the split between a perceiver and objects perceived, which constructs an erroneous reification of both.

Nirvikalpa is the absence, or 'seeing-through', of these erroneous mental constructions, as aimed for in yoga and meditation, in which both the calming of the mind (samatha, samadhi) and insight into the workings of the mind (prajna, bodhi, vipassana) are sought after.