Application of phase-induced lateralization to the Stenger test.
The Stenger test was employed to estimate the genuine hearing thresholds in normally hearing volunteer subjects simulating a total unilateral loss. The test was carried out in its standard form and in a modified form in which a phase shift was introduced between the signal delivered to the two ears, set to produce phase-induced lateralization towards the 'poor' ear. The standard test estimated the thresholds at a mean of 13.5 dB above the true thresholds at five frequencies from 250 Hz to 4 kHz. Thresholds at the different frequencies were compared, and although thresholds were lower for the higher frequencies, the apparent effect of frequency was not statistically significant. The modified test, using a 90 degrees phase shift, was found to enhance the test at 250 and 500 Hz (thresholds estimated at about 7 dB above true values), but not significantly at 1 kHz.
Boyd
P J
PJ
Department of Audiology, University of Manchester, UK.
Rowson
V J
VJ
Reeves
D
D
D000328:Adult; D001288:Attention; D001301:Audiometry, Pure-Tone; D004007:Dichotic Listening Tests; D005260:Female; D034381:Hearing Loss / Q000175:diagnosis*; D006315:Hearing Loss, Functional / Q000175:diagnosis*; D006801:Humans; D008144:Loudness Perception; D008297:Male; D008875:Middle Aged; D010898:Pitch Perception; D012016:Reference Values