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Table 1 Frequency mapping of an Advanced Bionics CI speech processor with the standard clinical FAT (left) and an example of an experimental FAT as set up in this study (right) where x = disabled and - = not applicable

From: Evaluating hearing performance with cochlear implants within the same patient using daily randomization and imaging-based fitting - The ELEPHANT study

Standard FAT

Experimental FAT

Electrode pair

Lower bound

Upper bound

Bandwidth

Electrode pair

Lower bound

Upper bound

Bandwidth

–

–

–

–

Phantom

238

640

402

1–2

238

442

204

1–2

640

862

222

2–3

442

578

136

2–3

862

1055

193

3–4

578

646

68

3–4

1055

1383

328

4–5

646

782

136

4–5

1383

1770

387

5–6

782

918

136

5–6

1770

2124

354

6–7

918

1054

136

6–7

2124

2544

420

7–8

1054

1257

203

7–8

2544

3155

611

8–9

1257

1529

272

8–9

3155

3720

565

9–10

1529

1801

272

9–10

3720

4412

692

10–11

1801

2141

340

10–11

4412

5176

764

11–12

2141

2549

408

11–12

5176

6244

1068

12–13

2549

3025

476

12–13

6244

7239

995

13–14

3025

3568

543

13–14

7239

8598

1359

14–15

3568

4248

680

14–15

x

x

–

15–16

4248

8054

3806

15–16

x

x

–