PSY100H1 Lecture Notes - Lecture 2: Psychophysics, Retina
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PSY100H1 Full Course Notes
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Document Summary
Ex. light rays to retina and being processed into the brain. Perception- selection, organization and interpretation of sensory input. Psychophysics- the study of how physical stimuli are translated into psychological experience. Illusion- a distortion of the senses, revealing how the brain normally organizes and interprets sensory stimulation. Optical illusions- discrepancy between physical reality and visual appearance. Bottom- up processing- builds an image starting with the external features. Detect specific features of stimulus combine specific features into more complex forms recognize stimulus. Top-down processing- form perception involves top-down processing clearly emphasized by the gestalt psychologists, who demonstrated that the whole is more important than the sum of its parts. It will prime an image for you. Formulate perceptual hypothesis about the nature of the stimulus as a whole select and examine features to check hypothesis recognize stimulus. Reversible figure: an unstable visual perception, one which leads the beholder to vacillate (changes) between two or more different interpretation.
