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Behavioral azimuth JND versus reference azimuth, for rabbits, derived from data in Ebert et al. (2008) (their Fig. 2c). Dashed line indicates a 15° JND. ITD JNDs from the Ebert et al. (2008) data were transformed into azimuth JNDs using the inverse of the equation, ITD = (275 μs) · sin(azimuth), taking reference location into account. JND data at the reference ITD of 300 μs were used to compute the azimuth JND at a reference of 90°.
