Part 1: What is perception?; the six sensory processes - seeing colour, seeing depth, absolute and differential thresholds, feature detector cells, right and left hemispheres, colour vision. Part 2 From sensation to perception: distance perception - relative size, relative brightness, superimposition, height, texture, perspective, motion parallax, accommodation, retinal disparity, convergence; motion perception; theories of perceptual organization - Gestalt principles, pattern regognition; perceptual constancies - shape, brightness, location; what ambiguity and illusion tell us about perception - geometric illusions, ambiguous figures, paradoxical figures. Part 3 Object recognition: context effects - perceptual set and expectations; bottom-up and top-down processing. Part 4 Development of perception: face perception; visual deprivation; pattern recognition. Part 5 ESP: subliminal perception.