Fig. 3.

Schematic of the conventional and interleaved ABR stimulus designs tested. a The conventional approach presents tone pips at a single frequency and level until the desired number of averages are acquired. b–d In contrast, the interleaved approach presents a stimulus train containing a single tone pip of each tested frequency and level. This train is then presented repeatedly until the desired number of averages are acquired. For details regarding the ordering of frequencies and levels in each interleaved protocol, see text. Note: the horizontal time axis is plotted at the same scale for all four sequences, highlighting differences in tone presentation rate, 10 tones/s for conventional and 50 tones/s for interleaved. These rates were used for data shown in Fig. 6.