Is my eye like a camera?

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Is my eye like a camera?
2015-04-18 12:02:30
Psychology,Evidence & Enquiry
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  1. What is perceptual adaptation?
    • Stratton 1896,
    • Wore vision inverting glasses for 8 days, after day 4 his vision appeared normal until he concentrated on objects 
    • Kohler 1962, similar experiment, participants saw cars as upside down but number plates as the right way up 
    • Could be unconscious inference (Helmholtz 1867), the brain is using internal knowledge and ideas to allow the status quo to continue
  2. How can proprioception be fooled?
    • Capelari et al (2009)
    • Rubber hand is obscured from vision using a mirror making it look like it belonged to p' 
    • Stroking sensations as well as painful stimuli were felt in the glove by p's
  3. What is change blindness?
    • The phenomenon in which major changes are not noticed within one's field of vision, despite the fact that attention is being paid
    • Simons and Levin (1998) participants spoke to confederates (asking directions) who's identities changed mid conversation after a period of distraction. Many failed to notice this
    • Levin et al (2000) asked participants if they thought they would be able to notice a number of changes in a video, over 80% said they would but 11% actually did
  4. How does attention relate to change blindness?
    • Simons (2005)
    • We have limited attentional resources so we must choose something to focus on 
    • We see this item or task in great detail yet we lack the attentional resources to attend to things happening outside of this
  5. How do expectations relate to change blindness
    • In the real world, major changes in one's environment are accompanied by motion and other things such as sound 
    • There is no motion in a change blindness experiment so we assume they have not happened and do not pay them attention (Goldstein, 2010)
  6. Can change blindness have dangerous consequences in the real world?
    • Yes- Haines (1991) 
    • Asked pilots to complete a flight simulator involving the landing of a plane 
    • 2 of 4 failed to notice an obstruction on the runway and landed through it 
    • Happens because they are focussed on landing the plane
  7. What is external memory?
    • The brain does not use cognitive resources to store every aspect of one's surroundings as it is assumed that they will not change, despite reviewing visual feedback
    • Ballard et al (1997)
    • P's were eye tracked to pick up blocks with a mouse and copy a model presented 
    • Block colours were changed when they looked to see where they went 
    • Instead of realising, participants put them in the place the block of the new colour belonged