emission (OAE) values and cochlear function in patients with vitamin B12 deficiency and no
evidence of symptomatic hearing loss. Two groups were studied: Group 1: patients with
vitamin B12 deficiency; Group 2: a matched control group of patients with normal vitamin
B12 levels. There was no evidence of symptomatic hearing loss in either group. Transiently
evoked OAEs (TEOAEs) and spontaneous OAEs (SOAEs) were recorded. A comparative …