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Title
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Effect of changing pulse rate on profile parameters of perceptual thresholds and loudness comfort levels and relation to ECAP thresholds in recipients of the Nucleus CI24RE device
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Author
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Abstract
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| The Nucleus CI24RE Freedom device offers higher stimulation rates and lower noise levels in action potential measurements (ECAPs) than previous devices. A study including ten European implant teams showed that the effect of changes in rate from 250 to 3500 pulses per second on tilt and curvature of the T and C profiles is insignificant. When changing rate one may change the levels at all electrodes by the same amount. Using an automated procedure ECAPs could be measured quickly and reliably at a noise level of only 1 μV. However, this did not result in improved correlations between the tilt and curvature parameters of the ECAP profiles and those of the T and C profiles. Average C levels appear to differ markedly among implant centers; a better assessment protocol is required. When increasing stimulus rate one should take into account that this requires higher pulse charges per second and more power consumption. |
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Language
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English
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Source (journal)
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The international journal of audiology / Royal National Institute for the Deaf; British Society of Audiology. - Stockholm
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Publication
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Stockholm
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2010
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ISSN
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1499-2027
[print]
1708-8186
[online]
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DOI
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10.3109/14992027.2010.492401
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Volume/pages
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49
:10
(2010)
, p. 775-787
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ISI
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000282817200008
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Full text (Publisher's DOI)
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