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Sensation and perception

Sensation and perception. Sensation: the process in which our sensory receptors and nervous system receive and represent stimulus energies from our environment Perception: the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events.

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Sensation and perception

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  1. Sensation and perception

  2. Sensation: the process in which our sensory receptors and nervous system receive and represent stimulus energies from our environment • Perception: the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events Definitions

  3. Absolute threshold: the minimum stimulation needed to detect a particular stimulus 50 percent of the time • Subliminal: below one’s absolute threshold for conscious awareness • Difference threshold: the minimum difference between two stimuli required for detection 50 percent of the time • Webster’s Law: the principle that, to be perceived as different, two stimuli must differ by a constant minimum percentage (rather than a constant amount) • Sensory adaption: diminished sensitivity as a consequence of constant stimulation Thresholds

  4. Our eyes receive light energy and transduce it into neural messages that our brain then processes into what we consciously see. • Two physical characteristics of light are the wavelength – the distance from one wave peak to the next and the intensity or brightness/energy of the light waves vision

  5. The eye

  6. Visual processing

  7. Our audition or hearing is very adaptive • The physical characteristics of sounds are its frequency of waves and the pitch of the sound Hearing

  8. The ear

  9. Audio Processing

  10. Skin sensations vary into four groups – pressure, warmth, cold, and pain • Kinesthesis: the system for sensing the positions and movement of our individual body parts • Vestibular sense: the sense of body movement and position, including balance • http://www.youtube.com/watch?v=sxwn1w7MJvk touch

  11. Basic tastes are: sweet, salty, sour, bitter • Sensory interaction includes smell plus texture equals flavor Taste

  12. Taste zones

  13. smell

  14. http://www.youtube.com/watch?v=4OelrPzpQ6Q How senses go with perception

  15. http://www.youtube.com/watch?v=zNbF006Y5x4&playnext=1&list=PLBAA093DAADDF09A6&feature=results_mainhttp://www.youtube.com/watch?v=zNbF006Y5x4&playnext=1&list=PLBAA093DAADDF09A6&feature=results_main • Your senses concluding assumption • http://www.youtube.com/watch?v=hCV2Ba5wrcs • Perception explained Videos

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