A survey to identify the aetiology of hearing impairment among Saudi children was carried out. Children were divided into two groups according to presence or absence of laboratory evidence of herpes simplex virus infection 'at risk' and 'not at risk'. Serological tests for herpes simplex virus infection were performed on 1054 children. We found positive IgM antibody against herpes simplex virus...

A family which is part of a large kindred in which a sex-linked recessive syndrome manifested by profound deafness and partial albinism was reported by Margolis (1962) and independently by Ziprkowski et al. (1962). According to their reports hearing impairment was not found in carriers. The family first came to our attention because of deafness of a male child (III.5, Fig. 1) and later for gene...

Hearing impairment may affect children's communication skills, social development, and educational achievement. Little is known about the prevalence of hearing impairment among Chinese children. Data were taken from the 2006 second China National Survey on Disability (CNSD). Hearing impairment was defined as moderate (41-60 dB HL), severe (61-80 dB HL), profound (81-90 dB HL), or complete (>91 ...

This article investigated the relationship between age at onset of canonical babbling and audibility of amplified speech in children with hearing impairment. Thirteen children with severe-profound hearing impairment and two children with normal hearing participated in a longitudinal investigation of vocalization development. A nonconcurrent multiple baseline design was used to analyze vocalizat...

Man is a social creature; he derives his livelihood and his pleasure from communication, through sight and hearing, with others and with his environment. Deafness will impair this communication and, if present from birth, may hinder or even prevent its development. Children born with a hearing loss the prelingual deaf have a much greater problem than those who acquire deafness after language de...

Little is known about the perception of artificial spatial hearing by hearing-impaired subjects. The purpose of this study was to investigate how listeners with hearing disorders perceived the effect of a spatialization feature designed for wireless microphone systems. Forty listeners took part in the experiments. They were arranged in four groups: normal-hearing, moderate, severe, and profound...

PURPOSES To compare the speechreading between individuals with hearing impairment and with normal hearing levels to verify the factors that influence the speechreading among hearing impaired patients. METHODS Forty individuals with severe-to-profound hearing loss aged between 13 and 70 years old (study group) and 21 hearing individuals aged between 17 and 63 years old (control group) were eva...

To determine whether late onset of canonical babbling could be used as a criterion to determine risk of hearing impairment, we obtained vocalization samples longitudinally from 94 infants with normal hearing and 37 infants with severe to profound hearing impairment. Parents were instructed to report the onset of canonical babbling (the production of well-formed syllables such as "da," "na," "be...

hearing loss and meningitis were correlate in some aspects. hearing loss is the situation that can be shown in cochlear or retrocochlear defects. cochlear hearing loss is caused by inner or outer hair cell damage (however cochlear hearing loss has another causes, such as defect of arterial spiral ganglion, basilar and tectorial membrane) and retrocochlear hearing loss has neural origin and meni...