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Cortical auditory evoked potential (CAEP) response plotted against P1 CAEP norms for a 6-year old child with normal hearing in the right ear and a moderate-severe hearing loss due to VIII nerve hypoplasia in the left ear. A normal P1 CAEP response is observed in the child’s normal hearing ear (A). However, a replicable albeit questionable P1 CAEP response for the child’s age marked by polyphasic morphology is observed in the child’s left ear with the hypoplastic auditory nerve (B).
