Spanda is the subtle throb of consciousness, never static, through which the absolute expresses itself as the universe. The Spanda Kārikās, attributed to Vasugupta or his disciple Kallaṭa, teach the practitioner to recognize this vibration in moments of intense experience, at the beginning and end of perception, and so to recognize their own divine nature.
Spanda
Vibration: in Kashmir Śaivism, the dynamic pulsation of consciousness from which the world arises.