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PSYC 111: Intro Psych

PSYC 111: Intro Psych. Sensation and Perception. I. What’s the difference? - sensation - transduction - perception - binding. II. Psychophysics. The Absolute Threshold The Difference Threshold – JND and the Weber Fraction. III. The Theory of Signal Detection.

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PSYC 111: Intro Psych

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  1. PSYC 111: Intro Psych Sensation and Perception

  2. I. What’s the difference? - sensation - transduction - perception - binding

  3. II. Psychophysics • The Absolute Threshold • The Difference Threshold – JND and the Weber Fraction

  4. III. The Theory of Signal Detection • Discriminability (sensitivity, or d’) • Bias (criterion, or b )

  5. III. VISION BASICS – Let there be light! Wavelength – color Intensity – brightness Purity – saturation

  6. Capturing Light • The Eye is like a camera • Shutter • Lens • Film • Pupil - dilation • Lens - accommodation • Retina - transduction

  7. Transduction – the retina Rods and cones

  8. Brain of Bust!

  9. IV. In Living Color • Trichromatic theory • Common patterns of color blindness • Opponent Process Theory • Negative afterimages - http://www.eyetricks.com/3001.htm • Which one is correct? It all depends…..

  10. IV. In Living Color • Trichromatic theory • Common patterns of color blindness • Opponent Process Theory • Negative afterimages - http://www.eyetricks.com/3001.htm • Which one is correct? It all depends…..

  11. V. Seeing Forms (Objects) • Hubel and Wiesel – feature detectors in the PVC (Striate cortex) • Putting the features together • Gestalt Rules of Organization • Similarity • Proximity • Closure • Good continuation • Symmetry and Parallelism • The Case of the Face • Is face processing special? • Grandmother cells • Prosopagnosia • The Inversion Effect

  12. VI. Depth Perception • Binocular cues – retinal disparity and convergence

  13. VI. Depth Perception • Binocular cues – retinal disparity and convergence • Monocular cues – the Bob Ross Cues • Height in field of view • Relative size • Texture gradient • Interposition • Linear perspective • Light and shadow • Motion parallax

  14. IV. Hearing A. NOW HEAR THIS!!!! The Stimulus for Hearing Dimensions of Sound Intensity Volume dB Frequency Pitch Hz Purity Timbre

  15. Capturing Sound – the Ear

  16. C. The Basilar Membrane http://www.youtube.com/watch?v=dyenMluFaUw

  17. Theories or Pitch Perception Place theory Frequency Theory Which one is right? • Sound Localization Binaural Cues Monaural Cues – doppler effect • Brain or Bust! auditory nerve medial geniculate nucleus primary auditory cortex

  18. VI. The Chemical Senses – Smell and Taste TEXTBOOK!!!!!

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