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(A) Permanent noise-induced threshold shift measured 1 wk after exposure to an 8–16-kHz noise band at 100 dB for 2 h.
(B) Temporary noise-induced threshold shifts measured 6 h after exposure to the same noise band at 94 dB for 15 min. Each panel shows mean thresholds ± S.E.M. for the group, with group sizes indicated in the symbol key.
WT, wild type.
