• [required] Ramachandran on blindsight
  • See also NewsBlindsight
  • de Gelder, B., Tamietto, M., van Boxtel, G., Goebel, R. Sahraie, A., van den Stock, J., Steinen, B.M.C., Weiskrantz, L. & Pegna, A. (2008). Intact navigation skills after bilateral loss of striate cortex. Current Biology, 18, 1128-1129.


  • Blingsight = a phenomenon in which people without conscious visual perception in a certain area of their visual field can still demonstrate some response to visual stimuli in that particular field.
  • A kind of 'cortical' blindness - patients claim that they are blind, and they seem to loss all visual functions, but their eyes and optic nerves are still normal. Blindness is due to brain damage.
  • Documented by Poppel, Held, and Frost (1973), coined by Weiskrantz.
  • Patient DB can (under force choice)
    • point to the location of stimulus
    • detect movement
    • discriminate the orientation of lines and gratings
    • discriminate shapes such as X's and O's.
  • Others
    • affective blindsight (See Tamietto, M. & deGelder, B. (2008)) - successful forced-choice discrimination of positive versus negative facial expressions
    • Intact navigation in patient TN.


  • Neurophysiology - second pathway to the dorsal stream that bypasses V1
  • Consciousness and access
  • The function of consciousness