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Chapter

PSYC 100 Chapter Notes -Temporal Lobe, Cochlear Nerve, Fundamental Frequency


Department
Psychology
Course Code
PSYC 100
Professor
Ingrid Johnsrude

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The Ear and It’s Functions 6/8/2012 6:47:00 AM
The Ear and its Functions
Pinna
flesh covered cartilage attached to the side of the head
helps funnel sound through the ear canal toward the middle and inner ear
Eardrum
Tympanic membrane
Flexible membrane that vibrates back and forth in response to sound waves
and passes these vibrations on the receptor cells in the inner ear
Ossicle one of the 3 bones in the inner ear
Hammer
Anvil
Stirrup
o presses against a membrane behind an opening in the bone
surrounding the cochlea :
oval window (bone surrounding the cochlea)
o transmitting sound waves into the liquid inside the cochlea where it can
reach the receptive organ for hearing

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Cochlea a snail shaped chamber set in bone in the inner ear where auditory
transduction takes place
Basilar membrane a sheet of tissue that contains the auditory receptor cells
Auditory hair cells transduce mechanical energy caused by the flexing of the basilar
membrane into neural activity
Round window
an opening in the bone surround the cochlea
movements of the membrane behind this opening permit vibrations to be
transmitted through the oval window into the cochlea
Cilium
a hair like appendage of cell
involved in the movement of sensory information
found in the receptors in the auditory and vestibular systems
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