The<unk>  is administered by holding a vibrating tuning fork on top of the patient's head. The<unk>  is a screening<unk>  for hearing performed with a tuning fork. It can detect unilateral (one-sided) conductive hearing loss (middle ear hearing loss) and unilateral sensorineural hearing loss (inner ear hearing loss). The<unk>  is named after Ernst Heinrich<unk>  (1795–1878). Conductive hearing ability is mediated by the middle ear composed of the ossicles: the malleus, the incus, and the stapes. Sensorineural hearing ability is mediated by the inner ear composed of the cochlea with its internal basilar membrane and attached cochlear nerve (cranial nerve VIII). The outer ear consisting of the pinna, ear canal, and ear drum or tympanic membrane transmits sounds to the middle ear but does not contribute to the conduction or sensorineural hearing ability save for hearing transmissions limited by cerumen impaction (wax collection in the ear canal). The<unk>  has had its value as a screening<unk>  questioned in the literature.
Weber test
Bourne test
Rinne test
Heaf test
Ishihara test
Stenger test
Ober's test
Spurling's test