Changes over time of the refractory properties measured from ECAP in Pulsar CI100 cochlear implant recipients

Isaac Alvarez*, Angel de la Torre, Joaquín Valderrama, Cristina Roldán, Manuel Sainz, José Carlos Segura, José Luis Vargas

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Objective: The aim of this work is to present a longitudinal study of the refractory properties of the population of neurons involved in the generation of the evoked compound action potential (ECAP). Materials and Methods: The refractory properties of 12 subjects implanted with the Med-El Pulsar CI100 cochlear implant system have been examined by recording and analyzing ECAP responses collected under the masker-probe paradigm. Results: Our preliminary results show a statistically significant decrease of the refractory period and a statistically significant increment of the amplitudes of the ECAP responses after 3 months of cochlear implant experience. Conclusion: The evolution of the parameters describing ECAP responses reveals a decrease of the refractory period and an increment of the amplitudes associated to the use of the cochlear implant system. These changes take place in the first 3 months after the first switch-on of the cochlear implant processor and after this time the refractory period and the amplitudes tend to be stable.

Original languageEnglish
Pages (from-to)398-407
Number of pages10
JournalJournal of International Advanced Otology
Volume7
Issue number3
Publication statusPublished - 2011
Externally publishedYes

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