Brainstem responses can be quantified by correlation against the stimulus’s Hilbert envelope

Evidence

Stimulus-to-response cross-correlations (r -values) were generated using the Brainstem Toolbox 2013 (Skoe and Kraus 2010 ). The maximum cross-correlation values were chosen irrespective of the lag. Cross-correlations were performed against the Hilbert envelope of the stimulus, as recorded through the transducer and an artificial ear (GRAS Type 43-AG). — Dijk, Pim van, Physiology, Psychoacoustics and…, 4174

A measure of stimulus encoding strength was generated by calculating the cross-correlation between the stimulus envelope (as measured through the transducer and artificial ear) and the brainstem response. — Dijk, Pim van, Physiology, Psychoacoustics and…, 4187

Categorization

• DEFINE: Clarifies that EFR fidelity is scored against the Hilbert envelope of the actual delivered stimulus, measured via artificial ear, not the nominal waveform.
• corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 4174; Dijk, Pim van, Physiology, Psychoacoustics and…, 4187