PNB 2XA3 Lecture Notes - Lecture 6: Subjective Constancy, Ebbinghaus Illusion, Moon Illusion
23 Sep 2018
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The brain automatically integrates info about retinal image, distance, movement, and other factors, giving the perception that objects are physically constant: 1. The 2 middle circles are the same size when we don"t perceive them that way due to the size of the circles surrounding it: ex. Looks bigger when it is along the horizon rather than when it is not. The earth is turning and moving away from it therefore we see the difference in its size. 1 interpretation: we are comparing the size of the moon to the buildings: 2. They are the same but they look different: 3. Brightness constancy brightness of an object is perceived relative to its background: brightness of an object is perceived relative to its background, we think the bar is a different colour than the background, ex. Top down expectations of direction of light influences our perception of the checkerboard as a and b are the same shade of grey.
