TABLE 1.
The duration and intensity of tonal exposures at 8, 5, and 3 kHz resulting in at least 70 dB SPL CAP thresholds at ∼9, 6, and 4 kHz, respectively
| Total exposure duration (min)/tone level (dB SPL) | |||
|---|---|---|---|
| Tone frequency | |||
| ID | 8 kHz | 5 kHz | 3 kHz |
| JN193a | 18/110 | 12/110 | 12/110 |
| JL083a | 9/110 | 12/110 | 24/110 |
| JL153a | 9/110 | 12/110 | 24/110 |
| JL183a | 21/110 and 12/115 | 12/110 | 12/110 |
| AG013 | 18b/110 | 24/110 | 24/110 |
| AG223 | 9/110 | 12/110 | 12/110 |
| OT013 | 18/110 | 12/110 | 12/110 |
aStapedius muscle paralyzed
bFor half of the time, tone frequency was changed to 9 kHz to induce larger CAP threshold shift at the highest frequencies that were little affected by the exposure to 8 kHz