Categorized as mild, moderate, severe, or profound. An individual with a moderate hearing loss may be able to hear sound, but have difficulty distinguishing specific speech patterns in a conversation. Individuals with a profound hearing loss (deafness) may not be able to hear sounds at all.
The American Speech-Language-Hearing Association provides information pages, in both English and Spanish, on issues related to hearing and balance, speech and language, health insurance, and finding a professional.
The Center for Hearing Loss in Children at Boys Town National Research Hospital, established by the National Institute on Deafness and Other Communication Disorders, provides a wealth of accessible and supportive information both medical and psychosocial for parents and families of deaf children, as well as descriptions of videotape guides that can be ordered from the Center and papers on ototoxicity and congenital hearing loss addressed to professionals.
The National Information Center on Deafness at Gallaudet University is a centralized source of up-to-date information on topics dealing with deafness and hearing loss. The site includes a directory of national organizations and state commissions on deafness, a calendar of conferences and exhibits, and links to other resources.
In addition to an extensive list of FAQs, the NIDCD Web site includes a glossary of related terms, a directory of organizations, a list of clinical trials, publications, and access to a database of books, articles and patient education materials, put together by health-related agencies of the federal government.
Treating inherited retinal disease and deafness are likely near-term
Medical problems ranging hearing loss to Alzheimer's disease can be treated with a "replacement parts" or "extended warranty" strategy.
Approaches include stimulating the growth of nerve fibers to
improve sound perception and scanning the cortex to improve the device’s
links between impaired hearing and loss of cognitive abilities raise the
tantalizing possibility that restoring hearing could slow cognitive decline.
Deaf people who learned American Sign Language first show differences in brain structure compared with deaf people who learned to lip-read English first.
Although sensory systems share basic features of organization, each is uniquely
designed to respond to a particular aspect of the world. Here are some specifics on vision, hearing, taste and smell, and somatosensory systems.