Table 1.
Auditory neuropathy subject Information
| AN Subject ID |
AN Code1 |
Age | Sex | Ear Tested |
PTA Low |
PTA High |
1.0 kHz Threshold nHL |
N100 Detection nHL |
|---|---|---|---|---|---|---|---|---|
| #1 | AN13 | 33 | F | Left | 52 | 10 | 40 | 40 |
| #2 | AN7 | 27 | M | Left | 45 | 18 | 50 | 10 |
| #3 | AN2 | 60 | F | Right | 45 | 30 | 25 | 30 |
| #4 | AN16 | 18 | F | Left | 35 | 20 | 50 | 50 |
| #5 | AN10 | 26 | M | Left | 30 | 5 | 30 | 30 |
| #6 | AN29 | 26 | F | Right | 27 | 5 | 15 | 20 |
| #7 | AN28 | 26 | F | Left | 12 | 25 | 20 | 20 |
| #8 | AN30 | 21 | M | Right | 15 | 13 | 10 | 10 |
| Mean or Count | 29.6 | 5F-3M | 5L-3R | 32.6 | 15.8 | 30.0 | 26.3 |
| Subject ID | AN Code1 | Psycho-acoustic Gap (ms) | Speech Quiet/Noise | N100 Latency (ms) at 30 dB SL | N100 Amplitude (μV) at 30 dB SL | ABR (Wave V) | Auditory Neuropathy2 | Special Features |
|---|---|---|---|---|---|---|---|---|
| #1 | AN13 | 11.0 | 60/38 SNR=15 | 143 | -5.9 | Absent | Unspecified | |
| #2 | AN7 | 7.7 | 85/DNT | 138 | -3.6 | Abnormal (6.6 ms) | Unspecified | |
| #3 | AN2 | 15.0 | 19/3 SNR=15 | 179 | -1.8 | Absent | Type I | Vestibular |
| #4 | AN16 | 12.0 | 16/DNT | 147 | -15.7 | Absent | Unspecified | |
| #5 | AN10 | 5.0 | 76/51 SNR=10 | 117 | -3.7 | Absent | Unspecified | |
| #6 | AN29 | 7.1 | 21/DNT | 157 | -1.7 | Absent | Type I | Optic |
| #7 | AN28 | 5.4 | 95/DNT | 126 | -2.7 | Absent | Type I | Optic |
| #8 | AN30 | 5.8 | 98/40 SNR=0 | 113 | -3.5 | Abnormal (6.4 ms) | Type II | Temperature Sensitive |
| Mean or Count | 8.6 | 58.8/33.0 | 140 | -4.8 | 6 Absent | Type I: 3 | ||
| 2 Abnormal | Type II: 1 | |||||||
| Unspecified:4 |
ABR = auditory brainstem response. The ABRs were tested on separate occasions whereas psychoacoustic measures were performed on the same day as evoked potential testing. PTA = pure tone average. SNR = signal-to-noise ratio.
1
AN identification codes for subjects tested previously from published studies in our laboratory are included for cross reference. (Note the exception to the subject cross-reference codes in Michalewski, et al., 2005; subjects 2, 3, 4, and 5 in that study correspond to AN7, AN2, AN16, and AN10, respectively.)
2
Type I AN = post-synaptic; Type II AN = pre-synaptic; Unspecified = type not defined. DNT = did not test.