FIG. 6.

Effects of stimulus manipulations on horizontal acuity. A Average (±SD) discrimination functions for low-pass (LPN) and high-pass noise (HPN) with cutoff frequencies of 10 kHz. Results are shown for four mice. For comparison, the average discrimination function of broadband noise (BBN) is also shown for the same four mice. B Average (±SD) discrimination scores for pure tones. Frequencies were selected to represent components of the LPN and HPN. Testing was only conducted at 90°. Results obtained at the same location with broadband noise have been extracted from A.