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Related Experiment Video

Updated: May 30, 2026

Enhanced Cochlear Coverage and Hearing Preservation in High-Frequency Hearing Loss via Electric Acoustic Stimulation with Longer Electrode

Enhanced Cochlear Coverage and Hearing Preservation in High-Frequency Hearing Loss via Electric Acoustic Stimulation with Longer Electrode

Published on: October 11, 2024

Partial deafness treatment with the nucleus straight research array cochlear implant.

Henryk Skarzynski¹, Artur Lorens, Monika Matusiak

¹Institute of Physiology and Pathology of Hearing, Warsaw, Poland.

Audiology & Neuro-Otology

|August 18, 2011

Summary

The Nucleus Straight Research Array (SRA) cochlear implant significantly improved speech recognition in quiet and noise for patients with varying residual hearing. High hearing preservation was achieved using the round window surgical technique with the SRA implant.

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Area of Science:

Otolaryngology
Neuroscience
Biomedical Engineering

Background:

The Nucleus Straight Research Array (SRA) cochlear implant features a new 25-mm electrode carrier designed for minimally invasive insertion via the round window.
This study investigates the benefits of the SRA cochlear implant in patients with different levels of low-frequency hearing.

Purpose of the Study:

To measure speech recognition improvements (quiet and noise) in patients receiving the SRA cochlear implant.
To evaluate the preservation of residual hearing after SRA cochlear implantation.
To compare outcomes across three patient groups based on preoperative hearing levels (EC, EAS, ES).

Main Methods:

Prospective study with 23 adult cochlear implant candidates.
Patients divided into EC (≤50 dB), EAS (50-80 dB), and ES (≥80 dB) groups based on 500 Hz hearing thresholds.

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Last Updated: May 30, 2026

Enhanced Cochlear Coverage and Hearing Preservation in High-Frequency Hearing Loss via Electric Acoustic Stimulation with Longer Electrode

Enhanced Cochlear Coverage and Hearing Preservation in High-Frequency Hearing Loss via Electric Acoustic Stimulation with Longer Electrode

Published on: October 11, 2024

Monosyllabic word recognition and hearing thresholds assessed at 4 and 13 months post-implantation.

Main Results:

Significant speech recognition improvements observed in all groups (>20 percentage points).
Average scores at 4 months: 61.7% in quiet, 46.5% in 10 dB SNR noise (vs. 34.4% and 10.6% preoperatively).
High hearing preservation noted; median increase in thresholds was 15 dB up to 13 months.

Conclusions:

The SRA cochlear implant significantly enhances speech recognition for individuals with diverse residual low-frequency hearing.
The round window surgical approach with the SRA implant effectively preserves hearing.
EAS group patients (50-80 dB HL) showed a tendency for greater hearing loss compared to other groups.