Lecture notes on neural systems, vision, complex cells, direction selectivity, retinotopy, cortical maps, orientation maps, columnar organization, laminar organization, the Hubel-Wiesel model, dorsal and ventral streams, the inferotemporal cortex, face-evoked brain activity, human neurophysiology, dorsal and ventral streams, motion sensitive areas, double dissociation, a random dot stereogram, different monocular images, the lateral geniculate nucleus, LGN input, and ocular dominance columns.