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Figure 3. DP-gram based on measurements the cubic distortion product (CDP, SEM) of the two groups of rats made with a constant ratio of the primary tones (f2/f1 = 16/13 = 1.23) and with constant levels of f1 (60 dB SPL) and f2 (50 dB SPL). The CDPs differs significantly (P<0.05) from f2 = 9.2 kHz all the way up to 17.4 kHz. The bottom line is the general noise floor ( SEM).

Figure 3. DP-gram based on measurements the cubic distortion product (CDP,  SEM) of the two groups of rats made with a constant ratio of the primary tones (f2/f1 = 16/13 = 1.23) and with constant levels of f1 (60 dB SPL) and f2 (50 dB SPL). The CDPs differs significantly (P<0.05) from f2 = 9.2 kHz all the way up to 17.4 kHz. The bottom line is the general noise floor ( SEM).