Fig. 7.

Postinjury 30-dB SL click ABRs revealed wave I, IV, and V amplitude reductions (worse) in blast but not noise animals. Blast animals demonstrated significant decreases (worse) in wave I (top), IV (middle), and V (bottom) amplitudes at both 2 wk and 1 mo postinjury compared with preinjury recordings. No significant pre- vs. postinjury changes were observed for noise animals. Wave I recordings captured the only significant difference between blast and noise groups at 2 wk postinjury, although wave IV and V amplitudes demonstrated trends of difference. Data are means ± SE.