presbycusis

presbycusis /pres·by·cu·sis/ (-ku´sis) progressive, bilaterally symmetrical sensorineural hearing loss occurring with age.

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pres·by·cu·sis (przb-kyss)

n.

See presbyacusis.

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presbycusis

[-ko̅o̅′sis]

Etymology: Gk, presbys + akousis, hearing

hearing loss associated with aging. It usually involves both a loss of hearing sensitivity and a reduction in the clarity of speech.

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presbycusis [pres″be-ku´sis]

progressive, bilaterally symmetrical perceptive hearing loss occurring with age; it usually occurs after age 50 and is caused by structural changes in the organs of hearing. Initially, changes in the inner ear, such as degeneration of hair cells and changes in the basilar membrane, lead to decreased hearing at higher tones and a decline in pitch discrimination. As hearing continues to be lost, even lower pitch tones become harder to hear.

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presbycusis (prez´bikū´sis),

n the gradual loss of hearing that occurs naturally with age. The first sign is the diminished capacity to discern high-pitched tones.

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presbycusis, presbyacusia

progressive, bilateral loss of hearing with advancing age; occurs in several animal species, especially old dogs.

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presbycusis

Age-related hearing loss Audiology A progressive loss of hearing 2º to age-related changes in the inner or middle ear, beginning with high-frequency sounds–eg, speech, which may have a genetic predisposition, as it tends to occur in families; it occurs ±25% > age 65 to 75 yrs old, 50%  > age 75. See Hearing loss.