Development of electrophysiological and behavioural measures of electrode discrimination in adult cochlear implant users

Hearing Research
Rajeev MathewJaime Undurraga

Abstract

The plasticity of the auditory system enables it to adjust to electrical stimulation from cochlear implants (CI). Whilst speech perception may develop for many years after implant activation, very little is known about the changes in auditory processing that underpin these improvements. Such an understanding could help guide interventions that improve hearing performance. In this longitudinal study, we examine how electrode discrimination ability changes over time in newly implanted adult CI users. Electrode discrimination was measured with a behavioural task as well as the spatial auditory change complex (ACC), which is a cortical response to a change in place of stimulation. We show that there was significant improvement in electrode discrimination ability over time, though in certain individuals the process of accommodation was slower and more limited. We found a strong relationship between objective and behavioural measures of electrode discrimination using pass-fail rules. In several cases, the development of the spatial ACC preceded accurate behavioural discrimination. These data provide evidence for plasticity of auditory processing in adult CI users. Behavioural electrode discrimination score but not spatial ACC amplitu...Continue Reading

Citations

Jan 19, 2021·Hearing Research·Jaime A UndurragaDeborah Vickers
Mar 2, 2021·Hearing Research·Robin GransierJan Wouters
Aug 26, 2021·Journal of the Association for Research in Otolaryngology : JARO·Robert P Carlyon, Tobias Goehring

❮ Previous
Next ❯

Related Concepts

Related Feeds

Auditory Perception

Auditory perception is the ability to receive and interpret information attained by the ears. Here is the latest research on factors and underlying mechanisms that influence auditory perception.