Noise Localization after Unilateral Attenuation

Partial hearing loss was simulated by insertion of V51‐R plastic earplugs. Subjects wore plugs continuously for periods ranging from 6 h to 3 days. Predictable shifts in localization errors were observed when the stimulus was a broad‐band and noise made up of frequencies above 3000 cps. Reorientation in azimuth localizazation with earplugs inserted required three days or more unless accelerated by specific training.