抄録
The fixed-frequency threshold tracings at 1, 000 Hz and 4, 000 Hz for periodically interrupted and continuous tones were obtained on 452 cases with various types of auditory disorders.
Eleven cases among them showed type V audiogram in that the threshold for periodically interrupted tone is tracked at lower levels than thethreshold for continuous tone on one or more frequency tracings.
One case was suspected of non-organic hearing loss, and another case was diagnosed of reflex epilepsy with normal threshold.
Other 9 cases was diagnsoed of sensori-neural hearing loss and they showed type V at only one frequency threshold tracing.
Authors considered that type V obtained at only one frequency threshold tracing did not indicate nonorganic hearing loss.
