Resources of the Himalayan Yoga Tradition

Yoga Sutras of Patanjali, Chapter 1, Sutra 17

"Samprajñata, the samadhi of wisdom, occurs through the accompaniment of the appearances of gross thought (vitarka), subtle thought (vichara), ecstasy (ananda) and I-am-ness (asmita)." Swami Veda Bharati

Explanation: There are four types of samprajñata samadhi, depending on the object of concentration. When the concentration is on a gross object, such as something in the world,it is called savitarka; when on a subtle object, such as subtle matter, or a subtle faculty of reception, vichara, it is called savichara; when upon a feeling of bliss, it is called sa-ananda; and when upon the pure “I-sense” it is called sa-asmita . In all of these types of samadhis, the mind is not totally arrested.

This document is also found in and on facebook.