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Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
Psyc 2301 chapter five powerpoint 1(1)(1)
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Psyc 2301 chapter five powerpoint 1(1)(1)

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Transcript

  • 1. Chapter Five Sensation and Perception
  • 2. Sensation vs. Perception Sensation –What comes into our body through our sensory organs Perception –What our brain does with that information
  • 3. A Little Test • Unscramble the words Activity
  • 4. The Expectancy Effect • Our expectations (i.e., preconceptions about what we are supposed to perceive) can influence our perception. • We just proved this through our experiment! • (80-90% of students)
  • 5. How Do We Study Sensation? Psychophysics • Study of the relationship between a physical stimulus and your perception of it. • Concerned mostly with physical attributes of the stimulus (e.g., amp & loudness). Gustav FechnerGustav Fechner Father of Psychophysics
  • 6. In other words… Psychophysics: The point • To learn about our senses by pushing them to the limits Example: the auditory system • – Play a sound very quietly • – Eventually it’ll be so quiet, you may not be able to hear it • – Absolute threshold: the loudness that people say they can hear the sound 50% of the time
  • 7. Sensory Adaptation • Do you feel your clothes if they are still? • How about hearing a sound that hums in the background consistently?
  • 8. How do we know that we share the same reality? • Color blindness • Blindness • Deafness • Schizophrenia “There is no reality. There is only perception.”
  • 9. Sensory ProcessesSensory Processes  Visual information processingVisual information processing • Feature detectionFeature detection • Parallel processingParallel processing  Color visionColor vision • HueHue • SaturationSaturation • BrightnessBrightness • Color constancyColor constancy p. 74p. 74
  • 10. Sensory ProcessesSensory Processes  Hearing (audition)Hearing (audition) • Sound wavesSound waves  AmplitudeAmplitude O decibels – absolute thresholdO decibels – absolute threshold 85+ - produce hearing loss85+ - produce hearing loss 140+ - rock bands140+ - rock bands • Locating soundsLocating sounds  Sound shadowSound shadow  EcholocationEcholocation A demonstrationA demonstration
  • 11. Sensory ProcessesSensory Processes  Smell (olfaction)Smell (olfaction) • Age and sex differencesAge and sex differences  Taste (gustation)Taste (gustation) • Taste budsTaste buds • MicrovilliMicrovilli
  • 12. What’s that Smell Activity???
  • 13. Flavor Activity
  • 14. Attention and PerceptionAttention and Perception **Unattended stimuli and pop-out stimuli**Unattended stimuli and pop-out stimuli • Cocktail party effectCocktail party effect • Pop-out stimuliPop-out stimuli **Multi-tasking**Multi-tasking • http://http://youtu.be/xO_oEGHWSMUyoutu.be/xO_oEGHWSMU
  • 15. Theories of PerceptionTheories of Perception
  • 16. Theories of PerceptionTheories of Perception
  • 17. Sensation and Perception - intro.ppt © 2001 Laura Snodgrass, Ph.D.
  • 18. Homework • Read Chapter Six • See you Thursday!

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