AP Psych Unit 3 Flashcards
psychophysics
the study of relationships between the physical characteristics of stimuli
Absolute Threshold
The minimum stimulus energy needed to detect a particular stimulus
Subliminal
Below the absolute threshold for conscious awareness
Weber’s Law
different thresholds increase with magnitude of the stimulus
Sensory (neural) adaption
diminished sensitivity to stimuli as result of constant stimulation
signal detection theory
our thresholds vary constantly depending on emotions, distractions, motivations, expectations
perceptual set
mental predisposition to perceive one thing and not another
context
how we interpret stimuli depends on surrounds/situation
light energy wavelength
hue of color
light energy amplitude
intensity of color
Cornea
protects eye/bends light
pupil
small adjustable opening
Iris
colored muscles that dilates/constricts in response to light intensity
Lense
Light rays into an image on the fovea in the back of eyeball
Retina
blood vessel tissue on eyeballs inner surface
Optic nerves
ganglion cells axons twined together
visual cortext
occipital lobe
feature detectors
neurons in visual cortex that respond to specific features of a visual stimulus
parallel processing
brain can carry out multiple tasks simultaneously
Stroop effect
delay in perception when stimuli are “mistmatched”
opponent process theory
cones complete
Gestalt
german - early study of visual organization
form perception
figure and background
similarity
we group things that are similar
proximity
how close things are to each other