r Flashcards
the process that occurs when special receptors in the sense organs are activated, allowing various forms of outside stimuli to become neural signals in the brain.
sensations
process of converting outside stimuli such as light into neural activity
transduction
condition which the signals from the various sensory organs are processed differently, resulting in the sense information being interrupted as more than one sensation
synesthesia
also referred to as the DIFFERENCE THRESHOLD is the smalles difference between 2 stinuli
just noticeable difference ( JND )
lowest level of stimulation
absolute threshold
provides method for assessing the accuracy of judgements or decisions under uncertain conditions
signal detection theory
the tendency of the brain to stop attending to constant, unchanging information
habituation
tendency of sensory receptors cells to become less responsive to a stimulus
sensory adaptation
the lens changes its shape from thick to thin enabling it focus on objects that are close or far away
visual accommodation
visual sensory receptors found at the back of the retina, responsible for non color sensitivity to low levels of light
rods
are visual sensory receptors found at the back of retina, responsible for color vision and sharpness of vision
cones
three color theory
three types of cones
trichromatic theory
occurs as the eye recovers its ability to see when going from a brightly lit state to a dark state
dark adaptation
recovery of the eye’s sensitivity to visual stimuli in light after exposure to darkness;
light adaptation
light entering the eye separates into left and right visual fields
the visual pathway
proposes that visual neurons are stimulated by light of one color
opponent process theory
images that occur when a visual sensation persists for a brief time even after the original stimulus is removed
afterimages
sensory receptors of the eye
photoreceptors
visible part of the ear
pinna
short tunnel that runs form the pinnacle of to the eardrum
auditory canal
inner ear, snail shaped structure which filled wt fluid, contains special hair cells that are receptors for sound
cochlea
two bulblike projections of the brain located just above the sinus
receives information from the olfactory receptor cells
olfactory bulbs
they send a neural message through dis
auditory nerve
psychological experience of sound that corresponds to the frequency of the soundwaves,
higher frequencies are perceived by hugher pithches
pitch
