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Pre- and postoperative pure-tone thresholds; each symbol represents an individual patient. Scalar location of electrode, when available, has been denoted (the * represents the electrode abutting the basilar membrane). Diagonal lines are used to depict hearing preservation in relation to pure-tone average (PTA) shift bins as follows: PTA shift <15 dB, PTA shift between 15–30 dB, and PTA shift >30 dB.
