Table 2.
Auditory thresholds for a 200-ms pure tone at 500 Hz for the bimodal (BMD) and EAS subjects. The equivalent rectangular bandwidth (ERB) of the auditory filter, in hertz, is shown for the non-implanted ear of two BMD subjects and for the implanted ear (pre- and post-implant) of the EAS subjects
| BMD subjects |
500-Hz threshold (dB SPL) |
ERB (Hz) | EAS subjects |
PRE-implant 500-Hz threshold (dB SPL) |
PRE-implant ERB (Hz) |
POST-implant 500-Hz threshold (dB SPL) |
POST-implant ERB (Hz) |
|---|---|---|---|---|---|---|---|
| BMD1 | 42 | 332.3 | EAS1 | 62 | N/A | 66 | N/A |
| BMD2 | 60 | N/A | EAS2 | 36 | 338.4 | 49 | 360.0 |
| BMD3 | 52 | N/A | EAS3 | 26 | 193.4 | 27 | 202.7 |
| BMD4 | 76 | N/A | EAS4 | 23 | 102.9 | 36 | 129.2 |
| BMD5 | 55 | N/A | |||||
| BMD9 | 46 | 234.6 | |||||
| MEAN * | 44.0 | 283.5 | MEAN * | 36.8 | 211.6 | 44.5 | 230.6 |
| STDEV * | 2.82 | 69.1 | STDEV * | 17.7 | 118.8 | 16.9 | 117.9 |
*
The mean and standard deviation has been calculated for those subjects demonstrating frequency selectivity at 500 Hz (BMD1, BMD9, EAS2, EAS3, and EAS4).