Visual Imagery. Visual imagery. What is it? What’s it like? What’s it for?. Imagery. What shape are Snoopy’s ears? If you were driving from Gilmer to the corner and the gate was down, what would be the shortest detour? What color is a bee’s head?
Most people report “looking” at a mental picture to answer such questions.
This implies (but doesn’t prove) that there is a type of representation that is quasi-pictorial, that is, has some of the properties of a picture.
No distinct relation
Truth value only when described
Spatial mediumAnalog vs. proposition: “A ball is on a box”
Or different (mirror)
Time to answer question related to angle of rotation: easy to interpret as imaging the pieces rotating.
In many ways, it’s like perception
(but in some ways not)
Visual experience “screen”
People confused imagery and perception.
High imagery: “A nudist devouring a bird”
Low imagey: “The intellect of Einstein was a miracle”
Visual interfering task: subjects see a 1 or 2 on a computer screen & must say which digit not appear
Auditory interfering task: subjects hear a “1” or “2” and must say the other digit.
Control group: no task
visual interfering task = big effect on high imagery pairs
auditory interfering task = big effect on low imagery pairs.
color questions (“what color is the outside of a pineapple?”
size comparisons (“which is bigger, a popsicle or a pack of cigarettes?”)
Damage to ventral impairs visual imagery, damage to dorsal impairs spatial imagery
65% of Bay Area students got it wrong
Tilted figures tend to be remembered as more vertical or horizontal than they really are
Study this so that you could draw it.
Before you draw it. . . Rotate it 90 degrees clockwise—can you tell what it is?
Now draw it.
Inspection allows you to determine what a visual image is.
Imagine the letter “B.” Rotate it 90 degrees counterclockwise. Put a triangle directly below it having the same width and pointing down. Remove the horizontal line. What is it?
Rotate it 90 degrees counter clockwise.
Put a triangle directly below it having the same width and pointing down
Remove the horizontal line
People get the transformations right about 60% of the timeIf they get the transformations right, they name the image 60% of the time.
Images can be inspected to some extent, but it is not as effective as perception
Abstract nouns: can be coded only verbally.
Concrete nouns: can be coded verbally or in terms of images.
It seems to; data conflict a bit from study to study, but overall answer seems to be “yes.”
What might be ways to code the world other than vision?
We are a visual species, and it makes sense for memory to follow perception.
This is information that was in the image, and so can be extracted, but was not encoded, per se.
Example--will the bed fit in the alcove?