afterimage

noun

1. An image which persists or remains in negative after the original stimulation has ended.

   “If the fixation is wavering, especially when receiving the horizontal afterimage with the centroscope a thin pointer is used by the child to touch the fixation spot.”

   “The first paper, "The hypnotic induction of hallucinatory color vision followed by pseudonegative afterimages," introduces an ingenious experimental paradigm whereby Erickson is able to explore the genuineness of hallucinatory color vision.”