Cochlear Implants: Fundamentals and Application - part 2 ppsx

... contract 1-DC- 5 -2 103. Leake-Jones, P. A. and S. J. Rebscher. 1983. Cochlear pathology with chronically im- planted scala tympani electrodes. Annals of the New York Academy of Sciences 405: 20 3 22 3. Legouix, ... distinct parts (Fig. 2. 2). These are the squamous, petromastoid, and tympanic parts as well as the styloid F IGURE 2. 2. The human temporal bone with the squamous, petr...

Ngày tải lên: 11/08/2014, 06:21

... 23 6 Temporal Coding 23 7 Place Coding 26 2 Intensity Coding 27 2 References 27 4 6. Psychophysics 29 6 Acoustic Stimulation 29 6 Pitch and Timbre 29 7 Loudness 3 02 Critical Band and Ratio 305 Musical ... modern acoustics and signal processing. RF305.C536 20 03 617.8Ј9—dc21 20 020 30584 ISBN 0-3 8 7-9 558 3-6 Printed on acid-free paper. ᭧ 20 03 Springer-Verlag New Yor...

Ngày tải lên: 11/08/2014, 06:21

... (ms) Dissolved Pt (ng/mm /C) 2 0 123 4 0.1 1 10 100 1000 10.0 mA/geom. mm (AF) 2 10.0 mA/geom. mm (CF) 2 2.5 mA/geom. mm (AF) 2 2.5 mA/geom. mm (CF) 2 1 .2 mA/geom. mm (AF) 2 1 .2 mA/geom. mm (CF) 2 F IGURE 4.3. ... 1 .23 1.17* Left 1.1 Unilateral Right 2. 2 1.96 Left 1.71 *p Ͻ .05, Mann-Whitney U test. Side Cell volume (lm 3 ) Mean Bilateral Right 22 41 20 05** Left 1693*...

Ngày tải lên: 11/08/2014, 06:21

... from Paolini et al 20 00). -2 0 -2 0 -3 0 -3 0 -4 0 -4 0 -5 0 -5 0 -6 0 -6 0 -7 0 -7 0 -8 0 -8 0 Membrane potential (mV) AP EPSP F IGURE 5 .25 . Left: Intracellular traces from the globular bushy cells in the cochlear ... the neural 1.0 1.5 2. 0 2. 5 3.0 -7 6 -7 5 -7 4 -7 3 -7 2 -7 1 -7 0 -6 9 Time (ms) Graded EPSPs S 1m...

Ngày tải lên: 11/08/2014, 06:21

... were 9% and 1% for the F0/F1 /F2-MSP system, and 21 % and 16% for SMSP-DSP. The open-set CID sentence scores (scored as key words) were 53% and 56% for the F0/F1/F2-MSP system and 80% and 88% ... sentences was 76% for SPEAK Spectra -2 2 and 67% for Multipeak-MSP. SPEAK performed particu- larly well in noise. SPEAK Spectra -2 2 was approved by the FDA for postlin- guistically de...

Ngày tải lên: 11/08/2014, 06:21

... telemetry controller. V E 22 E3 E1 E2 E4 Power Supply V dd 123 4 V ss 22 I S1a S1b S2a S2b S3a S3b S4a S4b S22a S22b F IGURE 8 .21 . Switching circuitry for the Nucleus CI 22 system V dd is typically ... years Cumulative survival (%) 99.0 98.4 97.1 93 .2 99.7 98 .2 99.8 99.5 F IGURE 8 .28 . Cumulative survival rate for the Nucleus 22 , 24 M, and 24 R devices for all patients worl...

Ngày tải lên: 11/08/2014, 06:21

... (SPEAK) coding strategy. Oto- laryngology Head and Neck Surgery 117: 23 6 24 2. Staller, S., A. Parkinson, J. Arcaroli and P. Arndt. 20 02. Pediatric outcomes with the Nucleus 24 contour: North American ... stimulation on 8 electrodes for the Combi-40 system and 12 electrodes for Combi-40ם. The electrodes are distributed along short ( 12 mm), standard (21 mm), and long (27 mm) a...

Ngày tải lên: 11/08/2014, 06:21

... 19 92. NIH contract N0 1- DC- 9 -2 401. Research Triangle Institute. Zeng, F G. and R. V. Shannon. 19 92. Loudness balance between electric and acoustic stimulation. Hearing Research 60 (2) : 23 1 23 5. Zeng, ... al (20 02) suggested that MC levels could be set 45% (of the T level to LDL range) below LDLs for Nucleus 22 and Nucleus 24 implants using 25 0-Hz pulse rates, and 3...

Ngày tải lên: 11/08/2014, 06:21

... Chapters 3 and 4. The speech and language benefits of the Nucleus 22 F0/F2 WSP-II, F0/F1/F2 WSP-III, Mul- tipeak-MSP, SPEAK Spectra -2 2 systems, the Nucleus 24 SPEAK, CIS, and ACE systems, and the ... Ramkalawan and Davis 19 92; Gilbertson and Kamhi 1995; 7 62 12. Results 24 cochlear implant system: speech perception and speech production outcomes. Ear and Hearing 23 (1...

Ngày tải lên: 11/08/2014, 06:21

... opera- tions in and around a particular metropolitan area. In 20 02, the Economic Census reports $ 120 .21 billion in annual revenue for long-distance trucking ( 72. 6 percent of the total) and $45.35 ... driving experience is 1.87, 4.94, and 12. 25 months, re- spectively. This tells us that only 25 percent make it to the completion of their one-year-service-after-training employment...

Ngày tải lên: 06/07/2014, 14:20