الفهرس 
Introduction and RationaleOnly 14 pages are availabe for public view
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Abstract
A total number of 90 children participated in this study and divided into three equal groups. Group (I) included children with normal hearing sensitivity, group (II) included children with sensorineural hearing loss of different degrees, and group (III) included children with auditory neuropathy (as shown by intact otoacoustic emission and/or cochlear microphonic with absent ABR). All subjects were selected from the outpatient clinic of Audiology unit, El-Minia university hospitals.
All participants in this study were subjected to the following; Full history taking, otological examination, estimation of hearing sensitivity through free field audiometry, Conditioned play audiometry or ABR and ASSR.
Results showed that there was no significant correlation between PTA threshold and ASSR threshold in children with normal hearing sensitivity except at 4KHz. On the other hand, there was statistically significant correlation between PTA and ASSR threshold in children with sensorineural hearing loss at all frequencies. In case of AN, ASSR was present in all cases; results showed that as the carrier frequency of the stimulus increased, the number of ears with intact ASSR increased. Such frequency effect was statistically significant. The ASSR amplitude in SNHL group was larger than that of normal group and of AN group. The difference between the amplitude in SNHL group and each of normal and AN group was statistically significant. This was valid in the 4 test frequencies. Although the ASSR amplitude in the normal group was larger than that of AN group, the difference was not statistically significant.