Visual Constancy Flashcards
What are the four types of visual Constancy’s
Brightness,orientation,size,shape
Explain size constancy
The tendency to perceive objects as maintaining its size, despite the change in size on the retina
What is a visual angle
The angle that is constructed, when two lines are drawn from the top and the bottom of an object through the lens and on to the retina.
How does the brain help us in perceiving depth and the distance
The brain helps us to perceive the depth and the distance by analysing the retinal image and the visual angle.
When does size constancy fail
When two different sized objects at two different distances cast the same retinal image
What is shape constancy
The tendency to perceive an object as maintaining its shape, despite the change in shape of that object on the retina
Give an example of shape constancy
When you view a clock from different angles, you know that the shape of the clock has not changed, despite the change in the shape of the clock on the retinal image
What is brightness
The tendency to perceive an object as maintaining its brightness relative to its environment despite the change in the amount of light rays that are reflect form the object to the retina
Give an example of a brightness constancy
When you are sitting in a dark room, you know that the objects have not become duller even though the objects have become duller on the retina
What is Orientation constancy
Tendency to visualise the true orientation of an object in the environment, even though the retinal image may be at a different orientation
What is the definition of visual constancy
The tendency to perceive a visual stimulus as remaining stable or unchanging, despite the changes castes on to the retina.
