The self would consist of the primordial feeling that the protoself, in its native state, spontaneously and relentlessly delivers, instant after instant.
Damasio defines primordial feeling as the ceaseless, spontaneous felt output of the protoself — the most foundational stratum of selfhood — while noting it is insufficient alone to explain the full complexity of human self-experience.
, Self Comes to Mind: Constructing the Conscious Brain, 2010thesis