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25 Cards in this Set
- Front
- Back
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Accommodation |
The process by which the eye's lens changes shape to focus near or far objects on the retina |
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Optic nerve |
The nerve that carries neural impulses from the eye to the brain |
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Blind spot |
The point at which the optic nerve leaves the eye, creating a "blind" spot because no receptor cells are located there |
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Middle ear |
The chamber between the eardrum and the cochlea containing 3 tiny bones |
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Pitch |
A tone's experienced highness or lowness; depends on frequency |
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Frequency |
The # of given wavelengths that pass in a given time |
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Audition |
The sense or act of hearing |
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Opponent-process theory |
The theory that opposing retinal processes enable color vision |
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Young-helmholtz trichomatic theory |
The theory that retina contains different color receptors |
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Feature detectors |
Nerve cells in the brain that respond to specific features of the stimulus, such as shape, angle or movement |
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Cochlea |
A coiled, bony, fluid-filled tube in the inner ear throught which sound waves trigger nerve impulses |
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Inner ear |
The innermost part of the ear, containing the cochlea, semicircular canals, and vestibular sacs |
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Cochlear implant |
A device for converting sounds into electrical signals & stimulating the auditory nerve through electrodes threaded into the cochlea |
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Place theory |
In hearing, the theory that links the pitch we hear w/ the place where the cochlea's membrane is stimulated |
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Frequency theory |
In hearing, the theory that the rate of nerve impulses traveling up the auditory nerve matches the frequency of a tone |
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Conduction hearing loss |
Hearing loss caused by damage to the mechanical system that conducts sound waves to the cochlea |
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Sensorineural hearing loss |
Hearing loss caused by damage to the cochlea's receptor cells or to the auditory nerves |
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Vestibular sense |
The sense of body movement & position, including sense of balance |
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Gate-control theory |
The theory that the spinal cord contains a neruological "gate" that blocks pain signals or allows them to pass on to the brain |
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Sensory interaction |
Tje principle that one sense may influence another |
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Gestalt |
An organized whole |
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Figure-ground |
The organization of the visual field into objects that stand out from their surroundings |
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Grouping |
The perceptual tendency to organize stimuli into coherent groups |
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Depth perception |
The ability to see objects in 3 dimensions although the images that strike the retina are two-dimensional |
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Visual cliff |
A laboratory device fpr testing depth perception in infants and young animals |
