modules 12-16 Sensation Flashcards
use features on the object itself to build a perception
bottom-up processing
we perceive by filling the gaps in what we sense and it’s based on our experiences and schemas
top-down processing
(just notable difference) absolute thresholds are not really absolute
signal detection theory
the change needed is proportional to the original intensity of the stimulus
weber’s law
decreased responsiveness to stimuli due to constant stimulation
sensory adaptation
the ability to focus one’s listening attention on a single talker among a mixture of conversations and background noises, ignoring other conversations
cocktail-party phenomenon
stimuli below our absolute threshold
subliminal messages
our most dominating sense
vision
transformation of signals into neural impulses
transduction
information goes from the sense to the?
thalamus
three types of cones can make millions of combinations of colors
trichromatic theory
red/green
yellow/blue
black/white
opponent-process theory
from the thalamus it goes to the?
visual cortex in the occipital lobe of the cerebral cortex
short wavelengths
high frequency
long wavelengths
low frequency
transduction in the ear
waves hit the eardrum, anvil, hammer, stirrup, oval window
what vibrates first?
cochlea
lined with mucus and there are hair cells
basilar membrane
different hairs vibrate in the cochlea when they’re different pitches
place theory
all the hairs vibrate but at different speeds
frequency theory
something goes wrong with the sound and the vibration on the way to the cochlea
conduction deafness
the hair cells in the cochlea get damaged
nerve (sensorineural) deafness
receptors located in the skin
touch
bumps on our tongue
papillae
