Hearing loss is a partial or total inability to hear. Hearing loss may be present at birth or acquired at any time afterwards. Hearing loss may occur in one or both ears. In children, hearing problems can affect the ability to acquire spoken language, and in adults it can create difficulties with social interaction and at work. Hearing loss can be temporary or permanent. Hearing loss related to age usually affects both ears and is due to cochlear hair cell loss. In some people, particularly older people, hearing loss can result in loneliness.
Audiology is a branch of science that studies hearing, balance, and related disorders. Audiologists treat those with hearing loss and proactively prevent related damage. By employing various testing strategies, audiologists aim to determine whether someone has normal sensitivity to sounds. If hearing loss is identified, audiologists determine which portions of hearing are affected, to what degree, and where the lesion causing the hearing loss is found. If an audiologist determines that a hearing loss or vestibular abnormality is present, they will provide recommendations for interventions or rehabilitation.
e-pek@k is a project that facilitates the usage of information and communication technologies to provide the services for the hearing impaired community in Malaysia.
Sound Seekers was a British charity which works to improve the lives of deaf children and children with ear diseases in the developing countries of the Commonwealth of Nations. It provided specialist equipment, training and support to some of the poorest countries of the world, where people with the 'hidden disability' of deafness may otherwise not receive the help they need. In 2020, Sound Seekers merged with DeafKidz International, with the combined charity using the DeafKidz International name.
The All India Institute of Speech and Hearing, commonly known as AIISH (AYE-SH), is located in Manasagangotri, Mysore, India. It is an autonomous institute under the Ministry of Health and Family Welfare. The institute was established in 1966 with a focus on training professionals for speech and hearing sciences.
Dafydd Stephens was an audiological physician, holding the post of Honorary Professor of Audiological Medicine at the Cardiff University School of Medicine at Cardiff University. He was also a visiting professor at Swansea University and the University of Bristol. He previously worked as a consultant audiological physician at the Welsh Hearing Institute, University Hospital of Wales.
Pure-tone audiometry is the main hearing test used to identify hearing threshold levels of an individual, enabling determination of the degree, type and configuration of a hearing loss and thus providing a basis for diagnosis and management. Pure-tone audiometry is a subjective, behavioural measurement of a hearing threshold, as it relies on patient responses to pure tone stimuli. Therefore, pure-tone audiometry is only used on adults and children old enough to cooperate with the test procedure. As with most clinical tests, standardized calibration of the test environment, the equipment and the stimuli is needed before testing proceeds. Pure-tone audiometry only measures audibility thresholds, rather than other aspects of hearing such as sound localization and speech recognition. However, there are benefits to using pure-tone audiometry over other forms of hearing test, such as click auditory brainstem response (ABR). Pure-tone audiometry provides ear specific thresholds, and uses frequency specific pure tones to give place specific responses, so that the configuration of a hearing loss can be identified. As pure-tone audiometry uses both air and bone conduction audiometry, the type of loss can also be identified via the air-bone gap. Although pure-tone audiometry has many clinical benefits, it is not perfect at identifying all losses, such as ‘dead regions’ of the cochlea and neuropathies such as auditory processing disorder (APD). This raises the question of whether or not audiograms accurately predict someone's perceived degree of disability.
Marion Downs was an American audiologist and professor emerita at the University of Colorado Health Sciences Center in Denver. She pioneered universal newborn hearing screening in the early 1960s and spent over 30 years advocating for its adoption in hospitals, as well as for the provision of hearing aids to infants displaying hearing loss. Her efforts were aimed at raising awareness within the medical community about the developmental challenges associated with childhood deafness. Thanks to her initiatives, 95 percent of newborns born in America today undergo screening for hearing loss. As a result of her efforts, 95 percent of all newborns in America today are screened for hearing loss. She devoted her professional life to the promotion of early identification of hearing loss in newborns, infants, and young children and to helping deaf and hard of hearing individuals lead fulfilling lives.
Speech-Language & Audiology Canada (SAC), formerly known as the Canadian Association of Speech-Language Pathologists and Audiologists (CASLPA), is a national organization supporting and representing speech-language pathologists, audiologists, and communication health assistants. The association adopted its new name and logo on February 5, 2014.
The National Institute of Speech and Hearing (NISH) is an institute devoted to the education and rehabilitation of individuals with speech-language and hearing impairments located in Thiruvananthapuram, the capital city in the Indian state of Kerala. It was established in 1997 on the initiative of the state of Kerala and is a self-financing affiliate college of the University of Kerala. Academics at NISH is unique in the sense that NISH has an integrated campus where students with hearing impairment and students with normal hearing share the same campus. Bachelor's level courses exclusively for students with hearing impairment include Degree courses in Fine Arts, Computer Science and Commerce affiliated to University of Kerala. On the other hand, NISH also provides RCI approved professional courses at undergraduate level and graduate level in Audiology and Speech Language Pathology as well as diploma courses affiliated to Kerala Health University (KUHS)
Deafness has varying definitions in cultural and medical contexts. In medical contexts, the meaning of deafness is hearing loss that precludes a person from understanding spoken language, an audiological condition. In this context it is written with a lower case d. It later came to be used in a cultural context to refer to those who primarily communicate through sign language regardless of hearing ability, often capitalized as Deaf and referred to as "big D Deaf" in speech and sign. The two definitions overlap but are not identical, as hearing loss includes cases that are not severe enough to impact spoken language comprehension, while cultural Deafness includes hearing people who use sign language, such as children of deaf adults.
An audiologist, according to the American Academy of Audiology, "is a person who, by virtue of academic degree, clinical training, and license to practice and/or professional credential, is uniquely qualified to provide a comprehensive array of professional services related to the prevention of hearing loss and the audiologic identification, assessment, diagnosis, and treatment of persons with impairment of auditory and vestibular function, and to the prevention of impairments associated with them."
HASA is a social benefit 501(c)(3) organization located in Baltimore, Maryland, that specializes in facilitating communication. Established in 1926, the organization provides special education services through Gateway School, audiology and speech-language services through its Clinical Services Department, and interpreting services for the deaf through its CIRS Interpreting Department.
World Hearing Day is a campaign held each year by Office of Prevention of Blindness and Deafness of the World Health Organization (WHO). Activities take place across the globe and an event is hosted at the World Health Organization on March 3. The campaign's objectives are to share information and promote actions towards the prevention of hearing loss and improved hearing care. Any individual or organization can participate in various ways, by sharing campaign materials and organizing outreach actions. Examples are provided in the World Hearing Day annual activities reports. For participation to be recognized, one needs to register and report on their activity.
Auditory science or hearing science is a field of research and education concerning the perception of sounds by humans, animals, or machines. It is a heavily interdisciplinary field at the crossroad between acoustics, neuroscience, and psychology. It is often related to one or many of these other fields: psychophysics, psychoacoustics, audiology, physiology, otorhinolaryngology, speech science, automatic speech recognition, music psychology, linguistics, and psycholinguistics.
Safe listening is a framework for health promotion actions to ensure that sound-related recreational activities do not pose a risk to hearing.
There are about 357,000 deaf and 3,210,000 hard-of-hearing people in Canada. The country can be split into Francophone and Anglophone regions, and has both French and English as official languages. The majority of Canada is considered Anglophone, while the province of Quebec along with small parts of New Brunswick, Ontario, and Manitoba are primarily French-speaking. The presence of these two main languages and cultures also brings forth different deaf cultures between the two regions. In Francophone regions, the official language used by deaf and hard-of-hearing people is Quebec Sign Language.
The Democratic Republic of the Congo has a population of about 1.4 million deaf people out of a total population of about 86.7 million. The World Health Organization (WHO) claims that countries in Sub-Saharan Africa are one of the more greatly affected regions by hard-of-hearing complications, compared to the rest of the world. Deaf people in the DRC are subject to neglect and discrimination by their families and the government, but they are also met with small, various ways of support and charity through international, European, Australian, and American religious, non-religious, and governmental organizations.
The Windward Islands are a group of islands in the Caribbean Sea that include Dominica, Martinique, Barbados, Saint Lucia, Saint Vincent and the Grenadines, Trinidad and Tobago, and Grenada. A variety of cultures, beliefs, languages, and views of deafness exist on the islands.
The Global Coalition of Parents of Children who are Deaf or Hard of Hearing (GPODHH) is an international collaboration of parent-led support groups for families with children who are deaf or hard of hearing and provides support, information, and systemic advocacy. GPODHH advocates for the need for families to be active collaborators and partners throughout the development of new programs, services and systems directed to the lives of children who are deaf or hard of hearing and their families.
