Vocab Quiz Flashcards
absolute threshold
smallest level of stimulus that can be detected
bottom-up processing
an explanation for perceptions that start with an incoming stimulus and work upward until a representation of the object is formed in our minds
change blindness
a perceptual phenomenon that occurs when a change in a visual stimulus is introduced and the observer does not notice it
accommodation
part of the adaptation process that involves altering one’s existing schemas, or ideas, as a result of new information or new experiences
audition
the formal phrase for hearing
cochlea
the spiral cavity of the inner ear containing the organ of Corti, which produces nerve impulses in response to sound vibrations.
binocular cues
provide depth information when viewing a scene with both eyes
blind spot
place on the retina out where the optic nerve leaves the eye, no receptors (rods/cones) are located here
cochlear implant
a device for converting sounds into electrical signals and stimulating the auditory nerve through electrodes threaded into the cochlea
color constancy
perceiving familiar objects as having consistent color, even if changing illumination alters the wavelengths reflected by the object.
difference threshold
The smallest difference between two stimuli that can be detected half the time.
extrasensory perception
the controversial claim that perception can occur apart from sensory input; includes telepathy, clairvoyance, and precognition
conduction hearing loss
Occurs when sound vibrations from the tympanic membrane to the inner ear are blocked
fovea
The central spot of the retina, which contains the greatest concentration of cones.
cones
The 6 million receptor cells located mostly in the center of the retina that transduce light waves into neural impulses, thereby coding information about light, dark, and color.
depth perception
the process of organizing and interpreting sensory information, enabling us to recognize meaningful objects and events.
feature detectors
nerve cells in the brain that respond to specific features of the stimulus, such as shape, angle, or movement.
inattentional blindness
hen you fail to see visible objects when your attention is focused elsewhere
inner ear
innermost part of the ear, containing cochlea, semicircular canals, and vestibular sacs.
monocular cues
Eight visual cues that can be seen with one eye and that allow us to perceive depth.
intensity
amount of energy in a light or sound wave, we perceive as brightness
iris
a ring of muscle tissue that forms the colored portion of the eye
kinesthesis
the system for sensing the position and movement of individual body parts.
figure-ground
This is the idea that we naturally organize what we see into objects (figures) that stand out from their backgrounds.
frequency theory
in hearing, the theory that the rate of nerve impulses traveling up the auditory nerve matches the frequency of a tone, thus enabling us to sense its pitch.