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Measuring the ABR resulting from a range of individual tone frequencies shows a significant increase in auditory threshold across a broad frequency spectrum.
| Frequency (kHz) | Average threshold before K/F (dB SPL) | Average threshold after K/F (dB SPL) | Δ Threshold (dB SPL) | Significant? |
|---|---|---|---|---|
| 2 | 29 | 87 | 58 | Yes**** |
| 4 | 26 | 85 | 59 | Yes**** |
| 8 | 53 | 88 | 35 | Yes**** |
| 16 | 58 | 82 | 24 | Yes**** |
| 32 | 65 | 87 | 22 | Yes**** |
