PSYC 307 Lecture 19 Sensation and Perception -we receive signals and interpret them sensation is when sensory signals reach detectors in our bodies, reaching our brain perception is how brain processes, selects, organizes and interprets the sensory information received from sensory organs world we sense is not same as world we perceive perception -internal representation-interpretation -based on our experiences our sense of what makes sense influences how we perceive information -prior expectations has impact on perception reliable differences in 1)susceptibility to optical illusions -different aspects of physical environment lead to difference in susceptibility -foreshortening hypothesis -e.g. horizontal-vertical illusion -lines are same length-higher susceptibility for people who reside in more "open" environments 2)pictorial depth perception -western education plays big role in interpreting elephant picture-teaches to perceive 2D and 3D images depth cues: >relative size of objects -objects that are bigger we perceive as being closer to us than objects that are smaller >object superimposition -objects that are closer to us we perceive as overlapping on objects farther away from us >vertical position -objects that are higher on visual field tend to be farther away >linear perspective -some sort of horizon where parallel lines will converge, picture is extending away from you, often used to direct attention >texture gradient -closer things are, the more detailed/ textured they are
European art- point perspective Korean art- oblique perspective 3)object vs field focus