Related Experiment Video
Updated: Aug 19, 2026
Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
Discrimination of speech sound contrasts determined with behavioral tests and event-related potentials in cochlear
A J Beynon1, A F M Snik, D F Stegeman
1Cochlear Implant Centre Nijmegen/St. Michielsgestel--ENT Dept., University Medical Centre Nijmegen, the Netherlands. a.beynon@kno.umcn.nl
Abstract:
Cortical potentials evoked with speech stimuli were investigated in ten experienced cochlear implant (CI, type Nucleus 24M) users using three different speech-coding strategies and two different speech contrasts, one vowel (/i/-/a/) and one consonant (/ba/-/da/) contrast. On average, results showed that, compared to subjects with normal hearing, P300 amplitudes were smaller; however, most latencies were within the normal range. Next, individual P300 measures in response to the two speech contrasts were compared to behavioral discrimination scores. Significant within-subject differences in P300 amplitudes and latencies were found for the three speech coding strategies. These differences were in agreement with the behavioral, strategy-dependent discrimination of the speech contrasts.
