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PLASTICITY IN VISION PERCEPTION
N/A
11
Science
Professional
12/15/2010

Additional Science Flashcards

 


 

Cards

Term
Plasticity
Definition

ability of vision and other senses to adjust to new conditions of stimulation

 

Ex: wearing a new pair of glasses

 

- differentiates between visual space  and kinesthetic space

Term
Visual Motor skills
Definition

agreement of what we are seeing and what we are doing with our hands and fingers.

 

involved with plasticity and the remapping of the relationships between visual and kinesthetic space.

Term

Visual Capture

 

Definition

visual perception dominates kinesthetic (touch) and auditory perception

 

Ex: ventriloquists- hear voice coming from dummy

with prism over eye, we see a straight object look curved and thereby the object feels curved although it is straight

Term
Evidence for visual capture
Definition
Sperry rotated eyes in newts and frogs, observed that they would miss the fly but when eyes were rotated back to normal the newts and frogs immediately acted normal
Term
Is correlation between vision and movement or touch innate?
Definition

Sperry's experiment- YES

Experiments with the young - YES

Growth of organism-NO

Visual Capture - NO

Term
What do we learn from inverting lens experiments?
Definition

Active limb movements are important in realigning the relationship between vision and kinesthetics.

 

Active motion is crucial for establishing new relationships between vision and motor behavior.

Term
Corollary Discharge Theory
Definition

Convenient model of perceptual processing for:

direction constancy and visual stability,

motion sickness,

kinesthetic-visual recalibration,

height vertigo

Term
Visual Effects of Lenses
Definition

1) shift direction

2) curve lines

3) change accommodation distance

4) change convergence

5) chromatic aberration

Term

McCullough Effect

 

( observers presented with green horizontal lines and red vertical lines, they then associated red with horizontal lines and green with vertical lines)

Definition

showed evidence that there were color coded contour detectors in the visual system.

 

long visual aftereffect probably due to a cortical effect.

Term
Vision itself is modifiable
Definition

Evidence:

1) Depth cue recalibration

2) McCullough effect

3) Tilt aftereffect

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