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Lecture Comments (3)

2 answers

Last reply by: Professor Charles Schallhorn
Wed Apr 8, 2015 4:04 PM

Post by Daniel Nguyen on March 30, 2015

The links are not in the quick notes, and this is the case for many of the previous lectures before this one (ex. McGurk Effect link from "The Other Senses" were not in the quick notes), with the exception of "Perception, Part 1", the only lecture where the links WERE there. In this particular video, I'm referring to the links at 7:47 (Illusions.) I'm just letting you know!

Superb lectures by the way :)

Perception, Part 2

  • Gestalt is a cognitive psychology viewpoint that also is a way to understand how the brain finds patters and interprets the world around us—principles include similarity, proximity, continuity, connectedness, and closure
  • Figure-ground is a way of focusing our attention that allows us to change how we view an ambiguous figure
  • Depth perception is the ability to see objects in three dimensions although the images that strike the retina are two-dimensional
  • The visual cliff was a lab study by Gibson and Walk to determine when children learned depth perception
  • There are both binocular cues (retinal disparity) and monocular cues (relative size, interposition, and more) that allow us to see depth

Perception, Part 2

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  1. Intro
    • Motion Perception
    • Perceptual Constancy
    • Color Constancy
    • Shape Constancy
    • The Ames Room and Forced Perspective
    • Illusions
    • Impossible Figure: Blivet
    • Top-Down Processing and Illusions
    • Extrasensory Perception (ESP)
    • Review
    • Intro 0:00
    • Motion Perception 0:12
      • Stroboscopic Movement -- In the Case of Motion Pictures -- 24 fps -- a Series of Still Photos Creating The Illusion of Movement
      • Phi Phenomenon -- An Illusion of Movement Created When Two or More Adjacent Lights Blink On and Off in Quick Succession (Think a Movie Marquee or Lights on the Vegas Strip)
    • Perceptual Constancy 3:04
      • Perceiving Objects as Unchanging (Having Consistent Shapes, Sizes, Lightness, and Color) Even as Illumination and Retinal Images Change
    • Color Constancy 3:33
      • Perceiving Familiar Objects as Having Consistent Color, Even if Changing Illumination Alters the Wavelengths Reflected by the Object
      • (Picture of Balloon, Part of Which is in Direct Light and Appears to Be a Different Color)
    • Shape Constancy 4:35
      • Although Our Viewing Angle May Change or the Object May Rotate, We Still See the Object as Staying the Same Shape
      • e.g. When We See a Door -- Closed, Partially Open, Mostly Open -- From the Same Angle
    • The Ames Room and Forced Perspective 5:37
      • Diagram Showing Example of Ames Room and Forced Perspective
    • Illusions 7:47
      • Mega Site
      • Animated Necker Cube
      • Dogfeathers
      • Table Illusion
      • Spiral Illusion
      • Hollow Face Illusion
    • Impossible Figure: Blivet 12:11
      • Where Does the Middle Prong Start? (Top-Down Processing)
    • Top-Down Processing and Illusions 13:40
      • So Why Do We See These Illusions?
      • Most of the Examples of Illusions We've Seen are From Top-Down Processing
      • Examples -- Figure Ground (Vase-Face), Old Woman-Young Woman, Ambiguous Figures, Seeing Patterns Where There is Randomness
      • Seeing Impossible Figures -- Our Brain Sees 2-D But Interprets the Visual as 3-D
      • Vertical v Horizontal Stripes Making a Person Look Thinner or Thicker
      • The Moon Raching Through the Clouds as We Are Driving
    • Extrasensory Perception (ESP) 16:52
      • The Highly Controversial Claim That Perception Can Occur Apart From Sensory Input; Includes Telepathy, Clairvoyance, and Precognition
      • Parapsychology
      • Ultimately -- What is the Evidence?
      • James Randi (The Amazing Randi and JREF $1M)
      • Skeptical Inquirer (Michael Schermer)
    • Review 21:33
      • Take One Constancy and Illustrate How It Alters What We View Things That May Appear to be Something They Are Not
      • Connect the Ideas of Perception and Schema and How They Interact