perception, motion and action Flashcards
a physicist who made important contributions to fields as diverse as thermodynamics, nerve physiology, visual perception, and aesthetics.
Hermann von Helmholtz
versions of which are still used today to enable physicians to examine the blood vessels inside the eye.
ophthalmoscope
we perceive the object that is most likely to have caused the pattern of stimuli we have received.
Likelihood Principle
perceptions are the result of unconscious assumptions, or inferences, that we make about the environment.
unconscious inference
regularly occurring physical properties of the environment.
Physical regularities
usually assume that light is coming from above, because light in our environment, including the sun and most artificial light, usually comes from above.
Light-from-above Assumption
characteristics associated with the functions carried out in different types of scenes.
Semantic regularities
the area you are looking at.
Central vision
everything off to the side.
Peripheral vision
objects in central vision fall on a small area
fovea
Each time you briefly paused on one face.
fixation
rapid, jerky movement from one fixation to the next.
saccadic eye movement
Shifting attention from one place to another by moving the eyes
overt attention
Shifting attention while keeping the eyes still
covert attention
moving reveals aspects of objects that are not apparent from a single viewpoint.
Perception of Human Motion
