Figure 5.

Impact of data length on level-dependent TRFs. Top: boxplots of the fitted slopes for wave V peak amplitude/latency versus intensity levels are shown across participants (for the GT TRF) for each data length. A negative slope for latency and a positive slope for amplitude would indicate a level-dependent pattern. Each line represents an individual participant. Almost all participants show level-dependent effects in both latency and slopes after around 5 min per level (20 min of total data in the jointly fit TRF model). Bottom: boxplots of the wave V SNR across participants (for the GT TRF) are shown for each intensity level and each data length. Around 6 min of data within a level (24 min of total data) is enough for almost all participants to have wave V SNRs above 0 dB for the loudest intensity. However, some participants are still below 0 dB for the lowest intensity, even with 10 min of data within each level.