Inaccuracies in the measurement of auditory brainstem response data in normal hearing and cochlear hearing loss.
In a test-retest experiment inaccuracies in the measurement of the peak latencies and threshold of the auditory brainstem response were determined for a group with normal hearing and for a group with cochlear hearing loss. The inaccuracy of the auditory brainstem response threshold is less than 4 dB in both groups. The inaccuracy in latency was measured as a function of stimulation level. In both groups the latency inaccuracy of peak V varies from 0.1 ms at levels well above threshold to 0.2 ms near the response threshold. Analysis of variance showed that in subjects with normal hearing the intra- and interindividual variabilities of the peak V latencies contribute about equally to the total variance at all stimulation levels. The implications that these findings have for the determination of the horizontal shift of the latency-intensity curve are discussed.
vd Drift
J F
JF
Department of Otorhinolaryngology, Dijkzigt University Hospital Rotterdam, The Netherlands.
Brocaar
M P
MP
von Zanten
G A
GA
Lamoré
P J
PJ
D000328:Adult; D000704:Analysis of Variance; D001300:Audiometry, Evoked Response / Q000592:standards*; D001309:Auditory Threshold / Q000502:physiology*; D001933:Brain Stem / Q000502:physiology* / Q000503:physiopathology; D005072:Evoked Potentials, Auditory; D005260:Female; D006319:Hearing Loss, Sensorineural / Q000503:physiopathology*; D006801:Humans; D008297:Male; D011930:Reaction Time; D012016:Reference Values