AUPSY101 Chapter Notes - Chapter 4: Complex Differential Form, Psych, Temporal Lobe
20 May 2017
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Perceptions of form and pattern entail feature analysis. The process of detecting speci c elements in visual input and assembling them into a more complex form. Start with the components of a form such as lines, edges, and corners, and build them into perceptions of squares, bicycles, etc. Bottom-up processing - a progression from individual elements to the whole: unlikely to account for subjective contours. Top-down processing - a progression from the whole to the elements: subjective contours are traditionally attributed to top-down processing, it is the perception of contours where non actually exists. Top-down processing is clearly at work in the principles of form perception described by the gestalt psychologists. Repeatedly demonstrated that the whole can be greater than the sum of its parts. Phi phenomenon - illusion of movements created by presenting visual stimuli rapid succession. Distal stimuli - stimuli that lie in the distance (in the world outside the body)
