visual illusions

• what are the 4 explanations of visual illusions


  ambiguous figure, misinterpreted depth cue, size constancy, fiction
• what is size constancy


  objects percieved as constant size despite size on retina changing with distance
• whats a misinterpreted depth cue


  objects apparently in the distance are scaled up by the brain to appear normal size
• what is an ambiguous figure


  when there are 2 possible interpretations of an image. brain cant decide which is correct.
• what is fiction


  seeing something that isnt there
• ponzo illusion


  misinterpreted depth cue

  percieve horizontal line higher up as longer

  
• muller-lyer illusion


  misinterpreted depth cue

  both lines are the same length, but the line with outgoing fins seems longer.

  
• rubin's vase


  ambiguous figure

  can see a face and a vase, both images are correct, brain alternates

  
• ames room


  misinterpreted depth cue

  room shape of a trapezoid, people sen as different sizes even though they are the same