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

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

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Unformatted text preview: PSY 3321 Lecture 1 Perceptual Processes & Measurement • What’s the relationship between perception & reality? • What are the approaches to studying perception? • How do we measure perception? Studying Perception 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? Reality vs. Representation • Q1 – from reality to representation : Attended stimulus Stimulus on receptors Transduction Perception Neural processing Environmental stimuli Action Recognition Knowledge 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 Reality vs. Representation • Q2 – accuracy of the representation : – Naïve realism: representation = reality – Subjective realism: representation = reality Reality vs. Representation • Q2 – accuracy of the representation : – Illusions: – Hallucinations: Top Down vs. Bottom Up! Cicarelli, 2007 Cicarelli, 2007 Top Down vs. Bottom Up! • Major approaches : – Psychophysical – Physiological – Constructivist – Gestalt – Computational – Ecological Approaches to Perception • 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 • 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 • Constructivist approach : – People: Hermann von Helmholtz – Emphasis: – Question: How are our perceptions influenced by our knowledge & expectations?...
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This note was uploaded on 11/12/2009 for the course PSY 3321 taught by Professor Ceballos during the Spring '09 term at Texas State.

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

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