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. Author manuscript; available in PMC: 2020 Sep 15.
Published in final edited form as: Hear Res. 2019 Aug 8;381:107782. doi: 10.1016/j.heares.2019.107782

Figure 3. Effect of level sampling on algorithmic fitting.

Figure 3.

A: An ABR level series in response to 12.1 kHz tone-pips, with visual thresholds for Observers 1 & 2 indicated by thicker traces. B-D: The effects of undersampling are illustrated by removing subsets of averaged waveforms, rerunning the cross-covariance analysis and fitting the resultant points. E-H: For each set of original or undersampled waveforms, the correlation-coefficient vs. level functions are fit using either sigmoidal (blue) or power (pink) functions. The green line shows the criterion level of 0.35. The algorithmic threshold and its corresponding 95% prediction interval is shown in the panel corresponding to the fitting scheme chosen by the algorithm.