Acoustic Nerve - the eighth cranial nerve, the nerve concerned
with hearing and balance. Amplitude - the height of a sound
wave, as associated with the loudness of a sound. Ampulla - the
swelling at the base of each semicircular canal, containing
sensory cells which detect movement of the fluid within the
canals. Anvil - one of three bones of the middle ear that help
transmit sound waves from the outer ear to the cochlea. Also
called the Incus. Assistive Device - any device other than a
hearing aid which helps the hearing impaired. Audiogram - a
graph depicting the ability to hear sounds at different
Audiologist - a person trained in the science of hearing and
hearing impairments, who can administer tests and help in the
rehabilitation of Audiometry - the measurement of hearing
acuity. Auditory Nerve - the nerve carrying electrical signals
from the inner ear to the base of the brain. Auricle - outer
flap of the ear. Also called the pinna. Basilar Membrane - thin
sheet of material which vibrates in response to