D defs.my
Entry 1 sense Webster, 1913

Apperception

· Ap·per·cep·tion · IPA /ˌæpɚˈsɛpʃən/
01 n. The mind's perception of itself as the subject or actor in its own states; perception that reflects upon itself; sometimes, intensified or …
  1. 1.
    The mind's perception of itself as the subject or actor in its own states; perception that reflects upon itself; sometimes, intensified or energetic perception.(Metaph.)
    “This feeling has been called by philosophers the apperception or consciousness of our own existence.” Sir W. Hamilton.