Fig. 10.

EFRs captured central subcortical processing impairments in the IC with possible cortical contribution. SAM EFRs at 8 kHz and 80 dB SPL showed significantly decreased (worse) EFR amplitudes at lower AMFs (≤64 Hz), corresponding to IC and possibly cortex, at 2 wk and 1 mo postinjury to a greater degree in blast than noise animals. Mid-range AMF EFRs (90–512 Hz) showed trends of decrease (worse) for blast but not noise animals, whereas higher AMF EFRs (>512 Hz) showed minimal changes in both groups, suggesting more peripheral EFR remained intact. Data are means ± SE.