What is Sensation?
The process by which sensory receptors transduce physical stimulation in the environment into neural impulses.
What is Perception?
The process by which sensory input is interpreted to form a meaningful subjective percept.
What did Gustav Fechner find?
He found that the increase in stimulus intensity needed to perceive a change in intensity is proportional to original stimulus intensity.
What is SF?
Spatial Frequency is the amount of detail in an image - variation in contrast per unit of space.
What is Binocular Disparity?
Each eye receives different information about stimuli. (Depth Perception)
What is Color Constancy?
Differences in the background illumination can “trick” the brain
What is the Ventral pathway?
The Ventral “what” pathway extracts shape and texture information to identify objects
What is the Dorsal pathway?
The Dorsal “where” pathway processes relevant spatial information for the purposes of guiding action.
What is Visual Agnosia?
Could not identify visual objects, but could use visual information to guide behavior. Problems with their ventral pathway.
What is Optic Ataxia?
Can identify visual objects, but could not use visual information to guide behavior.
What is Denotivity?
Features that are similar and meaningful tend to be perceived as the foreground.
What is the range (Hz) that humans can hear?
human hearing is limited to frequencies between 20Hz and 20,000Hz.
