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PSY100H1 (1,821)
Chapter 5

Lec- Chapter 5 .docx

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Department
Psychology
Course
PSY100H1
Professor
Ashley Waggoner Denton
Semester
Fall

Description
Lec- Chapter 5 10/2/2012 7:15:00 AM Sensation and Perception:  Sensation: o detection of external stimuli  Perception: o internal representation of stimuli  Keep in mind: o everything is experienced in our brain o the world you live in is constructed by you o context is important o change is important  Sensation: o going from the world to your brain o stimuli need to be translated into chemical or electrical signals for the brain to understand o Transduction: process by which sensory receptors pas impulses to connecting neurons when they receive stimulation (e.g. from pressure on the skin) o refer to notes o How much of something does there have to be for you to notice it?  Sensory thresholds:  Absolute threshold: minimum intensity of something that must occur before we experience that sensation  Difference threshold: just a noticeable difference between 2 stimuli for a person to detect that difference (1 teaspoons of chili powder vs. 2 teaspoons of chili powder ) o Signal Detection Theory:  Determining whether you notice a faint stimulus or not requires you to make a judgment based on ambiguous information  Response bias:  a person’s tendency to report detecting a signal in an ambi
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