PSL300 FINAL EXAM QUESTIONS AND
ANSWERS 100% PASS
Wavelength - ANS distance from one wave peak to the next
trichromats - ANS humans have 3 cones: red, green and blue
primary colours - ANS red, green and blue
spectral colours - ANS evoked by single wavelength
extraspectral colours - ANS evoked by mix of wavelengths
yellow channel - ANS ganglion cells excited by red and green cones
red-green opponent channel - ANS ganglion cells inhibited by either red/green and excited by
the other
blue-yellow opponent channel - ANS either excited by blue and inhibited by red and green
(yellow) or the opposite
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,Daltonsim - ANS red-green colour blindess; can't distinguish these colours
reflectance of a surface - ANS its tendency to reflect certain wavelengths of light and absorb
others
colour constancy - ANS our brains ability to infer the reflectance of a colour
external ear - ANS pinna and ear canal, sealed at its end by the tympanic membrane, or
eardrum
middle ear - ANS air-filled space connected to the pharynx by the Eustachian tube
inner ear - ANS conatins the sensors: cochlea for hearing and the vestibular apparatus for
equilibrium
sound - ANS pressure waves
pitch - ANS what we perceive frequency as
hertz - ANS measurement of frequency
amplitude - ANS determines perception of loudness
eardrum - ANS what soundwaves vibrate
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, chain of small bones (malleus > incus > stapes) - ANS conveys vibrations through the middle
ear
oval window - ANS membrane between middle and inner ear
ossicles - ANS 3 smallest bones in the body that make up the chain of small bones that
convey vibrations through the middle ear
cochlea - ANS contains the receptor cells
vestibular duct and tympanic duct - ANS contain perilymph (fluid similar to plasma);
communicate at the helicotrema
cochlear duct - ANS contains endolymph (similar to intracellular fluid)
round window - ANS membrane through which wave energy enters from the cochlea at the
oval window
hair cells - ANS auditory receptor cells
organ of Corti - ANS contains the auditory receptor cells--mechanoreceptors called hair cells
(sits on the basilar membrane and under the tectorial membrane)
stereocilia - ANS 50-100 stiff "hairs" on each hair cell, which extend into the tectorial
membrane
auditory nerve - ANS aka cochlear nerve, a branch of cranial nerve VIII
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
ANSWERS 100% PASS
Wavelength - ANS distance from one wave peak to the next
trichromats - ANS humans have 3 cones: red, green and blue
primary colours - ANS red, green and blue
spectral colours - ANS evoked by single wavelength
extraspectral colours - ANS evoked by mix of wavelengths
yellow channel - ANS ganglion cells excited by red and green cones
red-green opponent channel - ANS ganglion cells inhibited by either red/green and excited by
the other
blue-yellow opponent channel - ANS either excited by blue and inhibited by red and green
(yellow) or the opposite
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
,Daltonsim - ANS red-green colour blindess; can't distinguish these colours
reflectance of a surface - ANS its tendency to reflect certain wavelengths of light and absorb
others
colour constancy - ANS our brains ability to infer the reflectance of a colour
external ear - ANS pinna and ear canal, sealed at its end by the tympanic membrane, or
eardrum
middle ear - ANS air-filled space connected to the pharynx by the Eustachian tube
inner ear - ANS conatins the sensors: cochlea for hearing and the vestibular apparatus for
equilibrium
sound - ANS pressure waves
pitch - ANS what we perceive frequency as
hertz - ANS measurement of frequency
amplitude - ANS determines perception of loudness
eardrum - ANS what soundwaves vibrate
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, chain of small bones (malleus > incus > stapes) - ANS conveys vibrations through the middle
ear
oval window - ANS membrane between middle and inner ear
ossicles - ANS 3 smallest bones in the body that make up the chain of small bones that
convey vibrations through the middle ear
cochlea - ANS contains the receptor cells
vestibular duct and tympanic duct - ANS contain perilymph (fluid similar to plasma);
communicate at the helicotrema
cochlear duct - ANS contains endolymph (similar to intracellular fluid)
round window - ANS membrane through which wave energy enters from the cochlea at the
oval window
hair cells - ANS auditory receptor cells
organ of Corti - ANS contains the auditory receptor cells--mechanoreceptors called hair cells
(sits on the basilar membrane and under the tectorial membrane)
stereocilia - ANS 50-100 stiff "hairs" on each hair cell, which extend into the tectorial
membrane
auditory nerve - ANS aka cochlear nerve, a branch of cranial nerve VIII
3 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
