Ksemaraja lived in Tenth Century Shrinagar. He was the brilliant student of the great Abhinavagupta who was a peerless master of tantra, yoga, philosophy, and poetics. In addition to Pratyabhijnahrdayam, Ksemaraja wrote Spandasandoha, Spandanirnaya, Svacchandoddyota, Netroddyota, Vijnnabhairavoddyota, Sivasutra-vimarsaini, Stavacinmanka, Parapravesaika, and Tattvasandoha.