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Figure 1. Condition of stereocilia in 500 Hz region of the organ of Corti in control chinchillas (CTR) and chinchillas exposed to conditioning noise for 1, 2 and 15 days (redrawn from Boettcher et al., 1992). Rating of 1 is normal and 5 equals severely damaged.

Figure 1. Condition of stereocilia in 500 Hz region of the organ of Corti in control chinchillas (CTR)
and chinchillas exposed to conditioning noise for 1, 2 and 15 days (redrawn from Boettcher et al., 1992).
Rating of 1 is normal and 5 equals severely damaged.