EFR slope across modulation depth reflects supra-threshold temporal coding fidelity

Evidence

EFR strength of the 100 % modulated condition was measured along with the slope of the EFR strength as a function of modulation depth reduction. The latter slope measure was proposed to reflect temporal coding fidelity to supra-threshold sounds (Bharadwaj et al. 2015 ). — Dijk, Pim van, Physiology, Psychoacoustics and…, 5872

Likely a combination of cochlear gain loss, temporal coding fidelity, along with potential head-size differences affects the 100 % modulated EFR strength. Because the EFR slope measure was not correlated to EFR strength in the same listeners, it may be that the differential slope measure to modulation depth reduction is more sensitive to temporal coding fidelity as earlier suggested in Bharadwaj et al. ( 2015 ). — Dijk, Pim van, Physiology, Psychoacoustics and…, 5885

Categorization

• DEFINE: Explains the key differential metric: instead of absolute EFR strength, take the EFR change per dB of modulation-depth reduction — the slope indexes temporal-coding fidelity.
• corroborated: 2 independent passages support this claim — Dijk, Pim van, Physiology, Psychoacoustics and…, 5872; Dijk, Pim van, Physiology, Psychoacoustics and…, 5885