Fallibility of visual perception

Fallibility of visual perception

1. Perception errors

   • Inconsistency between perceptual experience and physical reality. It can occur with any of the senses and semi gut think we are experiencing something that does not exist

2. Visual illusion

   • Distortion of error in perception of a visual stimulus
   • Occurs when the brain receives conflicting usual cues and forms an inaccurate perception
   • It will continue to of urea h time we look at it even though we knot it can't be real
   • The müller-lyer illusion
     • Two lines equal length one with Inwood pointing arrow heads and the other outward pointing arrows are perceived to be different lengths
     • Why does it occur
       • Due to the misapplication of size constancy we maintain a constant perception of the size of a Familiar object
   • The Ames room illusion
     • Why does this occur
       • The room is in a trapezoidal shape the ceiling is not parallel to the floor height of the left is double of right therefore when viewed through a peephole and one I this removes the ability to use been a killer depth cue
   • The Ponzo illusion
     • Why does this happen
       • The upper line appears to be further away that's being longer and example of linear perspective and perspective in the visual field
   • Ambiguous figures and impossible figures
     • There is more than one interpretation they can they can not be organised into a meaningful perception because they cannot exist in reality even though their peer to do so
   • The motion after effect
     • After viewing a moving object for a period of time and then viewing a static object appears to move in the opposite direction to the original moving stimulus io
   • Change blindness and inattentional blindness
     • Failure to notice the large changes in the visual scene due to a distraction
     • Failure to notice and object that is fully visible in the environment because attention was not focused on it