Skip to Main Content

Disability Research

Deafness

Congenital deafness: deafness that is present at the time a baby is born due to disease or genetics. 

Acquired: deafness that occurs after birth, may be associated with exposure to loud noises 

Genetic: deafness that occur in older age. About one-third of people over the age of sixty-five have hearing loss.

Treatments: medically or surgically, as in the removal of earwax, hearing aids, special telephones, alarm clocks, and doorbells that flash a light or shake the bed in addition to ringing.

Cochlear implants: electronic devices that give profoundly deaf persons a sense of sound that helps them understand speech and other noises. A microphone picks up sounds, which are processed, converted to electric impulses, and sent to different areas of the auditory nerve.

Hearing Loss

Causes: exposure to noise, previous middle-ear disease, and vascular disease. 

Conductive hearing loss results from sound that cannot get to the inner ear. Possible reasons for conductive hearing loss include impacted or large amounts of earwax, middle-ear infection, and rheumatoid arthritis. 

Sensorineural hearing loss: The presence of disease anywhere from the organ of Corti to the brain. The result is loss of hearing high tones. Presbycusis is sensorineural hearing loss caused by aging of the inner ear. Presbycusis affects more than 50 percent of individuals over age sixty-five.There are four types of presbycusis: sensory, neural, metabolic, and cochlear conductive.

Tinnitus: an internal noise generated within the hearing system, occurs in many types of hearing disorders at all ages, but it is reported more frequently in the elderly.

Tinnitus affects seven million people, of which 10 to 37 percent are elderly, and that number is growing. The ringing sound is generally high pitched with sensorineural loss and low pitched with conductive hearing loss. However, tinnitus may be present with or without hearing loss. 

40+ Common ASL (American Sign Language) Phrases and Words, 23 ASL Phrases, + 17 Must Know ASL Signs American Sign Language for Beginners (All Ages). This video focuses on the person(s) New to American Sign Language.

SLUCare audiologist Dr. Melissa Lowe explains the difference between conductive hearing loss and sensorineural hearing loss.