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How Do We Construct the Outside World?

Explore how our senses detect sensory information and perceive the world around us, including the fascinating world of optical and sound illusions.

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How Do We Construct the Outside World?

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  1. How Do We Construct the Outside World? • Sensation – detecting physical energy from the environment and encoding it as neural signals • Perception – the process of selecting, organising and interpreting sensory information, enabling us to recognize meaningful objects and events. • SENSATION  PERCEPTION = MEANING

  2. Selective Attention • At any moment, our awareness focuses (like a flashlight beam in the dark) on a limited aspect of all that we experience. • Some researchers believe that ever second our five senses take in 11,000,000 bits of information (while we are conscious of 40 of them)

  3. Inattentional Blindness • Failing to see visible objects when our attention is directed elsewhere

  4. Psychology and Optical Illusions • Psychologists LOVE visual illusions, because they reflect visions preeminence among our senses • Fun Fact: When vision competes with one of our other senses vision usually wins (this is called visual capture)

  5. Perceptual Consistency • Perceiving objects as unchanging (e.g., having consistent lightness, colour, shape, and size) even as illumination and retinal images change

  6. Are the lines straight or bent?

  7. Colour Consistency

  8. http://listverse.com/2007/09/16/20-amazing-optical-illusions/http://listverse.com/2007/09/16/20-amazing-optical-illusions/

  9. Size – Distance Relationship

  10. Shape Constancies

  11. Lightness Constancy • http://psylux.psych.tu-dresden.de/i1/kaw/diverses%20Material/www.illusionworks.com/html/shadow.html

  12. Perceptual Set • Our experiences assumptions and expectations may give us a mental predisposition that greatly influences what we perceive

  13. Movement?

  14. Multistable Perception

  15. Count the Fs • +++++++++++++++++++++++++++FINISHED FILES ARE THE RE-SULT OF YEARS OF SCIENTIF-IC STUDY COMBINED WITH THEEXPERIENCE OF YEARS+++++++++++++++++++++++++++

  16. Try Reading This • Aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht the frist and lsat ltteer be at the rghit pclae. The rset can be a toatl mses and you can sitll raed it wouthit porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe.

  17. Sound Illusions • Falling Bells • Drum Beat • Phantom Voices? • McGurk Effect • Can You Hear This?

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