Frequency specificity of the auditory brainstem response elicited by 1,000-Hz filtered clicks.
In normal-hearing subjects and in subjects with a flat cochlear hearing loss, auditory brainstem responses (ABR) were recorded at various levels of a 1,000-Hz filtered click stimulus with and without high-pass filtered masking noise. The difference in latency of the major peak in the ABR for the masked and unmasked condition was zero at the ABR threshold. We regard this as proof of the frequency specificity of the 1,000-Hz filtered click-stimulated ABR threshold. The difference between ABR threshold and the subjective puretone threshold at 1,000 Hz amounted to 19 dB in normal-hearing subjects and to 10 dB in subjects with a flat cochlear hearing loss. This is probably related to loss of temporal integration and an abnormal loudness growth (recruitment).
Conijn
E A
EA
Sophia Children's Hospital, Erasmus University, Department of Otorhinolaryngology, Rotterdam, The Netherlands.
Brocaar
M P
MP
van Zanten
G A
GA
D000161:Acoustic Stimulation; D000328:Adult; D001143:Arousal; D001301:Audiometry, Pure-Tone / Q000379:methods; D001309:Auditory Threshold / Q000502:physiology*; D015834:Cochlear Diseases / Q000503:physiopathology; D004056:Differential Threshold; D016057:Evoked Potentials, Auditory, Brain Stem / Q000502:physiology*; D005260:Female; D006311:Hearing Disorders / Q000503:physiopathology*; D006801:Humans; D012001:Hyperacusis; D008297:Male; D011930:Reaction Time