sensation and perception Flashcards
sensation
conversion of physical stimuli into neurological signals
perception
processing of sensory info to make sense of its significance
what sensory receptors do
respond to stimuli and trigger electrical signals
what sensory neurons do
transmit info from sensory receptors to CNS
what first happens to sensory stimuli in relation to brain
transmitted to projection areas in brain, hwich further analyze sensory input
threshold
minimum stim that causes a change in signal tsduction
weber’s law
just-noticeable difference for stimulus is proportional to magnitude of stimulus, and this proportion is constant over most of the range of possible stimuli
signal detection theory studies
effects of nonsensory factors such as experiences, motives, and expectations, on perception of stimuli.
response bias examined using
signal detection experiments with 4 possible outcomes
adaptation
decrease in response to stimulus over time
visual pathway
from retina to optic nerve to optic chiasm to optic tracts to lateral geniculate nucleus of thalamus to visual radiations to visual cortex
what cochlea do
detect sound
what utricle and saccule do
detect linear acceleration
what semicircular canals do
detect rotational acceleration
auditory pathway
cochlea to vestibulochochlear nerve to medial geniculate nucelus of thalamus to auditory cortex
