PSYC 363 Lecture Notes - Lecture 17: Interpolation, Railways Act 1921, Grandmother Cell
4 Mar 2017
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Document Summary
Principles of perceptual grouping by gestalt psychologists. Promixity: elements that are close together group more easily than elements that are far appart. Common motion: elements that move in unison are likely to be perceptually grouped. Symmetry and parallelism: elements that are symmetrical/parallel tend to group together. Good continuation: two edges that would meet if extended are perceived as a single edge that has been partially occluded. Perceptual interpolation: perceiving what cannot be seen directly (2 operations) The visual system interprets the image as a white bar partly occluding two white disks. The physically nonxistent edges of the bar in the region between the disks have a certain perceptual reality, with the interior of the bar seeming a bit whiter than the white surface of the page. Illusionary contours: nonexistent but perceptually real edges perceived as a result of egde completion. Reflects general truths about the world that the visual system uses to interpret scenes correctly in ways to promote survival.
