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Creating our Psychological Reality

Creating our Psychological Reality. If a tree fell in the forest, and no one was around, would it make a sound?. Sensation & Perception. Video 5:31 – 8:26. Sensation. Sensation: data coming from the senses Transduction info from senses changed to neural impulses Sensory reduction

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Creating our Psychological Reality

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  1. Creating our Psychological Reality If a tree fell in the forest, and no one was around, would it make a sound?

  2. Sensation & Perception Video 5:31 – 8:26

  3. Sensation • Sensation: data coming from the senses • Transduction • info from senses changed to neural impulses • Sensory reduction • Filter – not all information is sent to brain • Sensory adaptation: sending less of a signal from the senses that is continuous • Example: clothes on skin

  4. Vision http://www.youtube.com/watch?v=LU-uQj9nzIM

  5. The Eye • Cornea: protective cover, focuses light • Iris: muscle dilate/constrict to control amount of light • Pupil: opening inside of iris • Lens: adjusts to focus on objects at a distance, focuses light

  6. The Eye • Retina: inner surface w/sight receptors • rods (receptors for dark) & cones (receptors for light and color) • dark adaptation (cones -> rods) • light adaptation (rods -> cones) • Optic nerve: neural signals to brain • Blind spot: no vision receptors

  7. Perception • Video 14:57-17:42 • Selection / selective attention: we can’t pay attention to everything – we will notice things that are new, changing • http://nivea.psycho.univ-paris5.fr/ECS/kayakflick.gif • http://nivea.psycho.univ-paris5.fr/ECS/dottedline.gif • http://nivea.psycho.univ-paris5.fr/ECS/bagchangeNoflick.gif • Perceptual set: we notice things that we expect to see and interpret things in ways we expect it to happen

  8. Perception • Habituation: less attention in response to same stimulus (e.g., teacher talking in monotone voice) • Video 1:24-3:09 • Sensory adaptation vs. Habituation • Change in sensing vs. change in responding • Not consciously controllable vs. controllable • Change in strength won’t vs. will recover response

  9. Form Perception Figure-Ground Similarity Continuity Closure Proximity

  10. Constancies Size Brightness Shape Demo

  11. Perceptual Experiences • Synesthesia: info from one sense is interpreted by a different sense • Ex. Hearing music but seeing colors • Illusions: misinterpreting what you are seeing • Video 20:22-25:56

  12. Discussion • Thinking about all of the topics from this semester, where/how will expectations influence our psychological reality?

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