TABLE 3.
Wave | Click level (dB nHL) | Tinnitus | Matched non-tinnitus | Young non-tinnitus | |||
---|---|---|---|---|---|---|---|
Amplitude (μV) | Latency (ms) | Amplitude (μV) | Latency (ms) | Amplitude (μV) | Latency (ms) | ||
I | 30 | 0.03 ± 0.01 (20) | 3.7 ± 0.1 (13) | 0.032 ± 0.005 (32) | 3.71 ± 0.08 (23) | 0.10 ± 0.01 (20) | 3.38 ± 0.06 (20) |
50 | 0.06 ± 0.01 (22) | 2.6 ± 0.1 (17) | 0.07 ± 0.01 (28) | 2.54 ± 0.07 (24) | 0.15 ± 0.02 (21) | 2.47 ± 0.05 (21) | |
70 | 0.18 ± 0.02 (25) | 1.95 ± 0.05 (25) | 0.21 ± 0.02 (33) | 1.89 ± 0.03 (32) | 0.44 ± 0.05 (21) | 1.87 ± 0.03 (21) | |
80 | 0.20 ± 0.03 (11) | 1.81 ± 0.06 (11) | 0.33 ± 0.03 (14) | 1.71 ± 0.03 (14) | 0.59 ± 0.07 (17) | 1.72 ± 0.03 (17) | |
III | 30 | 0.19 ± 0.02 (20) | 5.78 ± 0.09 (19) | 0.17 ± 0.02 (32) | 5.86 ± 0.07 (29) | 0.16 ± 0.02 (20) | 5.53 ± 0.05 (20) |
50 | 0.24 ± 0.02 (22) | 4.76 ± 0.09 (21) | 0.20 ± 0.02 (28) | 4.74 ± 0.06 (28) | 0.24 ± 0.02 (21) | 4.62 ± 0.07 (20) | |
70 | 0.33 ± 0.03 (25) | 4.19 ± 0.04 (25) | 0.28 ± 0.02 (33) | 4.15 ± 0.03 (33) | 0.33 ± 0.03 (21) | 4.11 ± 0.03 (21) | |
80 | 0.40 ± 0.04 (11) | 4.10 ± 0.07 (11) | 0.38 ± 0.05 (14) | 3.99 ± 0.05 (14) | 0.40 ± 0.04 (17) | 4.02 ± 0.04 (17) | |
V | 30 | 0.47 ± 0.03 (20) | 7.57 ± 0.08 (20) | 0.39 ± 0.02 (32) | 7.75 ± 0.09 (32) | 0.43 ± 0.03 (20) | 7.35 ± 0.07 (20) |
50 | 0.60 ± 0.04 (22) | 6.60 ± 0.06 (22) | 0.50 ± 0.03 (28) | 6.52 ± 0.05 (28) | 0.60 ± 0.04 (21) | 6.45 ± 0.05 (21) | |
70 | 0.68 ± 0.04 (25) | 6.09 ± 0.04 (25) | 0.59 ± 0.03 (33) | 6.19 ± 0.04 (33) | 0.72 ± 0.04 (21) | 6.09 ± 0.04 (21) | |
80 | 0.80 ± 0.05 (11) | 5.9 ± 0.1 (11) | 0.65 ± 0.04 (14) | 6.0 ± 0.1 (14) | 0.74 ± 0.05 (17) | 5.96 ± 0.06 (17) |
Values are means ± standard error. Numbers in parentheses are number of stimulated ears. Because latency could not be always determined (see “Methods”), the number of ears contributing to the mean is sometimes less for latency than for amplitude