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SENSE PERCEPTION

SENSE PERCEPTION. WHAT CAN OUR SENSES PERCEIVE ? THE FIVE SENSES . We sense only 1 % of the electromagnetic spectrum: We sense radio waves as sound infrared as heat U ltraviolet , X-rays, and Gamma R ays as damage to our cells. SIGHT:. Frequencies between 16 and 20,000 Hz .

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SENSE PERCEPTION

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  1. SENSE PERCEPTION WHAT CAN OUR SENSES PERCEIVE? THE FIVE SENSES

  2. We sense only 1 % of the electromagnetic spectrum: • We sense radio waves as sound • infrared as heat • Ultraviolet, X-rays, and Gamma Rays as damage to our cells SIGHT:

  3. Frequencies between 16 and 20,000 Hz. • Can hear a watch ticking 6m away in a quiet room • 140 decibels (jet airplane) causes pain TOUCH: • Regions of our body differ in sensitivity • Two points are perceived as distinct at a distance of­ • 1 mm on our tongues • 70 mm on our backs SOUND:

  4. A slight sweetness is better perceived using the tipof the tongue. SMELL: • While the human tongue can distinguish only among five distinct qualities of taste, the nose can distinguish among hundreds of substances, even in minute quantities. TASTE:

  5. SENSE PERCEPTION Two basic stages: sensation and perception

  6. Sensation: Sense receptors activated, signals transmitted to the brain • Perception: • Selection-we select stimuli that stands out • Organization- • Prototypes-Knowledge structures • Personal Constructs-Mental Yardsticks • Stereotypes-generalizations of a group or situation • Scripts-guides to how we should act (e.g. social rules) • Interpretation-a way to explain so that it makes sense A person's unique psychological processes… how we “measure” people or events Sense and Perception

  7. 1. Language – A pronunciation for instance (f vs. v) 2. Culture – We’re taught ROYGBIV colour system, right angles, perspective 3. Biology – We are not physically able to see ultraviolet light 4. Experience and Expectations – See what we expect to see 5. Attention - We can’t process everything that reaches our senses Remember the Gorilla and Basketball Experiment? SENSE PERCEPTION: What Influences it?

  8. Try to identify what is the cause of the illusion... Go to: http://www.scientificpsychic.com/graphics/ • Most optical illusions are the result of: • Incongruent design elementsat opposite ends of parallel lines, • Influence of background patternson the overall design, • adjustment of our perception at the boundaries of areas of high contrast, • Afterimagesresulting from eye movements or from kinetic displays, • Inability to interpret the spatial structureof an object from the context provided by the picture. Perception Puzzles http://psylux.psych.tu-dresden.de/i1/kaw/diverses%20Material/www.illusionworks.com/html/illusionworks.html

  9. Spatially inconsistent and paradoxical, yet such images can reveal important insights into how we interpret three-dimensional objects from two-dimensional images. incongruent design elements at opposite ends of parallel lines What's wrong with this figure? 

  10. It’s in “Inception!!”

  11. So what's Happening? The is a physical model of an impossible staircase designed by genetist Lionel Penrose. It is the first impossible object ever made and served as an inspiration for M. C. Escher's famous print that incorporates this staircase, "Ascending and Descending." The actual model is separated at the right stair, but you can't see the split, because your visual system assumes that it is seeing this model from a non-accidental point of view; hence, it assumes that the stairs are joined.  Although the staircase is conceptually impossible, it does not interfere with your perception of it. In fact, the paradox is not even apparent to many people.

  12. In some cases the constraints for interpreting a scene or motion are ambiguous. Your visual system can interpret the scene in more than one way. Even though the image on your retina remains constant, you never see an odd mixture of the two perceptions -- it is always one or the other, although they may perceptually flip back and forth.

  13. Put simply, the mind imposes a frame on sense-perception to make it "make sense", insisting on seeing the cube in one perspective or another, or two faces or a vase, but not simply the ambiguous pattern with which it is confronted.

  14. Count the White & Black Dots

  15. TED TALK! (19mins) – BEAU LOTTO - How We See

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