Perceptual+Processes+and+Measurement_Lect+1_For+Students

Perceptual+Processes+and+Measurement_Lect+1_For+Students -...

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PSY 3321 Lecture 1  Perceptual Processes & Measurement
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What’s the relationship between  perception & reality? What are the approaches to studying  perception?  How do we measure perception? Studying Perception
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Reality vs. Representation   Questions : How do we go from a 3-D physical reality to  a 3-D mental representation? How accurate is the                  mental representation?
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Reality vs. Representation    Q1 – from reality to representation : Attended stimulus Stimulus on receptors Transduction Perception Neural processing Environmental stimuli Action Recognition Knowledge
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The Importance of Recognition The Man Who Mistook His Wife For  A Hat.  (By Dr. Oliver Sacks)  Visual Agnosia  –  An inability to  recognize objects; in this case, caused  by a brain tumor. Dr. Oliver Sacks
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Reality vs. Representation    Q2 – accuracy of the representation : Na ï ve realism:    representation = reality Subjective realism:    representation = reality
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Reality vs. Representation    Q2 – accuracy of the representation : Illusions:    Hallucinations:
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Top Down vs. Bottom Up! Cicarelli, 2007
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Cicarelli, 2007 Top Down vs. Bottom Up!
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Major approaches : Psychophysical Physiological Constructivist Gestalt Computational Ecological Approaches to Perception  
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Psychophysical approach : People:    Gustav Fechner Emphasis: Question:    What is the relationship between  physical energy in environment &  corresponding mental experience? Approaches to Perception   Attended stimulus Perception
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Physiological approach : People:    Johannes Mueller Emphasis: Question:    How does neurological processing  relate to initial stimulus & resulting  perception? Stimulus on receptors Perception Neural processing Approaches to Perception  
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Constructivist approach : People:    Hermann von Helmholtz Emphasis: Question:    How are our perceptions influenced  by our knowledge & expectations?
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