Psychology 1100E Lecture 10: Psych 1100E, Lecture #10, Perception & Audition
22 Oct 2018
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Department
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Professor
Feature Detection
- Neurons in visual cortex respond to very specific features of a visual image (i.e. edges,
angles, and movements)
- Certain people in certain professions can develop cellular responses to certain objects
related to their job (i.e. real estate agents, mechanics, etc.)
Gestalt → a configuration or idea
Babies are not born with the same set of expectancies of the 3D world. They develop them over
time through experience.
Gestalt Laws of Perceptual Organization
- Similarity
- Continuation
- Proximity
- Closure
- Figure & Ground
- How we focus attention to the foreground of an image vs. the so-called
background of an image
- “Winner-take-all” attention strategy
Perceptual Constancies
- Size
- We have certain learned expectancies about lines that cause us to make
assumptions about the sizes of objects or people in images
- Shape
- The actual lines in images may not be different from each other, yet we perceive
them to be because we have set expectancies
- Brightness
- What’s surrounding an object can alter our perception of the brightness or colour
of an object
Audition (Sound)
Frequency Range of Human Auditory System
- Runs from 20 Hz to 20,000 Hz
- As you move into the middle frequency
ranges, the sound becomes perceptually
louder
- The transduction of the sound is the
transduction of sound pressure waves
into action potential or electrical
potential going into the brain
Document Summary
Neurons in visual cortex respond to very specific features of a visual image (i. e. edges, angles, and movements) Certain people in certain professions can develop cellular responses to certain objects related to their job (i. e. real estate agents, mechanics, etc. ) Babies are not born with the same set of expectancies of the 3d world. How we focus attention to the foreground of an image vs. the so-called background of an image. We have certain learned expectancies about lines that cause us to make assumptions about the sizes of objects or people in images. The actual lines in images may not be different from each other, yet we perceive them to be because we have set expectancies. What"s surrounding an object can alter our perception of the brightness or colour of an object. Runs from 20 hz to 20,000 hz. As you move into the middle frequency ranges, the sound becomes perceptually louder.
