| hearing loss, noise-induced | Hearing loss from exposure to noise. The loss is often in the frequency range 4000-6000 hertz. (12 Dec 1998) |
|---|---|
| hearing loss, partial | A condition in which the sense of hearing, although defective, is functional with or without a hearing aid. The hearing level for speech is approximately 40-70 decibels I.s.o. (international organization for standardization) or 30-60 db a.s.a. (american standards association). (12 Dec 1998) |
| hearing loss, sensorineural | Hearing loss resulting from damage to the sensory mechanism internal from the oval and round windows. (12 Dec 1998) |
| Helmholtz theory of hearing | That the basilar membrane of the cochlea acts as a resonating structure, recording low tones from its apical turns and high tones from its basal turns. Synonym: Helmholtz theory of hearing. (05 Mar 2000) |
| sensorineural hearing loss | <neurology> A form of deafness that occurs due to dysfunction of the auditory nerve (cranial nerve VIII). (27 Sep 1997) |
| normal hearing | The ability to perceive sound normally. Synonym: normal hearing. Origin: G. Akousis, hearing (05 Mar 2000) |
| organ of hearing | The content of the cochlea including the portion of the membranous labyrinth containing the spiral organ (cochlear duct) and the perilymphatic channels (scalae) which lie on either side. Synonym: labyrinthus cochlearis, organ of hearing. (05 Mar 2000) |
| Rendu-Osler-Weber syndrome | <gastroenterology> An inherited disease characterised by thin blood vessel walls in the nose, skin and gastrointestinal tract. This condition ins associated with a high risk of bleeding complications. Inheritance: autosomal dominant. (27 Sep 1997) |
| weber | <physics> The standard unit of electrical quantity, and also of current. See Coulomb, and Ampre. Origin: From the name of Professor Weber, a German electrician. Source: Websters Dictionary (01 Mar 1998) |
| Weber-Christian disease | relapsing febrile nodular nonsuppurative panniculitis |
| Weber-Cockayne syndrome | <syndrome> This represents a group of rare inherited disorders in which blistering of the skin occurs in response to skin trauma. Large fluid-filled blisters can occur in response to injury, skin rubbing, chafing or even increases in room temperature. Secondary bacterial infection of the blisters is common. Complications include oesophageal stricture, infections, loss of function of hands and feet and malnutrition. The dermatologist is the expert in the evaluation and treatment of this disorder. (27 Sep 1997) |
| Weber, Ernst | <person> German physiologist and anatomist, 1795-1878. See: Weber's experiment, Weber's glands, Weber's law, Weber's paradox, Weber's test for hearing, Fechner-Weber law, Weber-Fechner law. (05 Mar 2000) |
| Weber-Fechner law | The intensity of a sensation varies by a series of equal increments (arithmetically) as the strength of the stimulus is increased geometrically; if a series of stimuli is applied and so adjusted in strength that each stimulus causes a just perceptible change in intensity of the sensation, then the strength of each stimulus differs from the preceding one by a constant fraction; thus, if a just perceptible change in a visual sensation is produced by the addition of 1 candle to an original illumination of 100 candles, 10 candles will be required to produce any change in sensation when the original illumination was one of 1000 candles. Synonym: Fechner-Weber law, Weber's law. (05 Mar 2000) |
| Weber, Frederick Parkes | <person> English physician, 1863-1962. See: Weber-Christian disease, Weber-Cockayne syndrome, Rendu-Osler-Weber syndrome, Sturge-Kalischer-Weber syndrome, Sturge-Weber disease, Sturge-Weber syndrome, Klippel-Trenaunay-Weber syndrome. (05 Mar 2000) |
| Weber, Moritz | <person> German anatomist, 1795-1875. See: Weber's organ. (05 Mar 2000) |