[The correlativity between the threshold acquired with ASSR and PTA].
OBJECTIVE
To explore the correlativity between the thresholds acquired with auditory steady-state responses (ASSR) and pure tone audiometry (PTA).


METHODS
Eighty-six subjects with normal and abnormal hearing (172 ears) were tested with ASSR and PTA at 500, 1000, 2000, 4000 Hz to get the thresholds of ASSR (single frequency) and PTA. Correlation analysis were done between the thresholds acquired with ASSR and PTA at different frequency (500, 1000, 2000, 4000 Hz) for each different hearing loss degree (< or = 20, 21-39, 40-59, 60-79, > or = 80 dB).


RESULTS
At each frequency, there was a close correlativity between the thresholds acquired with ASSR and PTA. The rectified threshold of ASSR and PTA at different frequency and hearing loss degree had been obtained.


CONCLUSIONS
The rectified ASSR threshold could be applied as an objective method for evaluating hearing loss to distinguish malingering deafness in the practice of forensic medicine.
Yang
Xiao-Ping
XP
Shanghai Key Laboratory of Forensic Medicine, Institute of Forensic Science, Ministry of Justice, P.R. China, Shanghai 200063, China. yangxp@ssfjd.cn
Fan
Li-Hua
LH
Zhou
Xiao-Rong
XR
D000161:Acoustic Stimulation; D000293:Adolescent; D000328:Adult; D001300:Audiometry, Evoked Response; D001301:Audiometry, Pure-Tone; D001307:Auditory Perception / Q000502:physiology; D001309:Auditory Threshold / Q000502:physiology; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D005260:Female; D005554:Forensic Medicine; D006319:Hearing Loss, Sensorineural / Q000503:physiopathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D055815:Young Adult