The Visual Guidance of Action Flashcards
How does Perception start?
With a static pattern of light intensity on the retina
What is the outcome of perception?
The formation of an internal representation of Objects in the environment
What is Optic Array
The structural pattern of light falling on the retina
What is the retinal flow field
The changing patterns of light on the retina produced by movement of the observer, relative to the environment as well as by eye and head movements
What is the efference copy
An internal copy of a motor command (e.g. to the eyes).
What can the efference copy be used for?
To compare actual with desired movement
True or False? Stimulation by light in itself does not lead to perception?
True
What is light energy affected by?
The medium that it traverses (e.g. water, glass, air)
What is Optic Flow?
Changes in the pattern of light when reaching a moving observer
What are structural invariants
Patterns of relationships that remain constant despite changes in the retinal image
What provides all the information needed for perception?
Optic Array and Optic Flow
What is the role of the perceiver?
To pick up information in optic array and optic flow
What are Affordances?
The potential uses of an object which are perceived directly (according to Gibson)
What is the information needed to guide action
Exteroceptive, Proprioceptive, Exproprioceptive
What is Exteroceptive?
Information gathered from the environment
