Investigation of directional hearing, as a function of the auditory stimulus, in patients with cochlear implants

Investigation of directional hearing, as a function of the auditory stimulus, in patients with cochlear implants - biCI

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00041143

Enrollment

Registered

2026-07-28

Start date

2025-02-13

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Z96.2

Interventions

Group 1: A single-arm, monocentric, cross-sectional observational study without intervention. The study examined a group of adult patients aged 18 and over with bilateral cochlear implants, whose init

side-discriminated speech understanding using the Freiburg Monosyllable Test

loudness scaling

and subjective assessment of directional hearing using a standardised questionnaire. A comparison group of people with normal hearing was not specifically recruited, but was drawn from published refer

consequently, the study comprises only this single arm.

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: min. 6 month of duration with two cochlear implants

Exclusion criteria

Exclusion criteria: Just one cochlear implant, not 18 years old

Design outcomes

Primary

Measure	Time frame
Objective directional hearing performance in the Extended Children’s Table Test (ERKI) is measured by the mean angular deviation between the target and response positions in degrees, as well as the hit rate in the reference range, defined as the proportion of stimuli with a deviation of no more than plus or minus 10 degrees. The assessment was carried out once per person under standardised conditions in the soundproof booth.	—

Measure

Time frame

Objective directional hearing performance in the Extended Children’s Table Test (ERKI) is measured by the mean angular deviation between the target and response positions in degrees, as well as the hit rate in the reference range, defined as the proportion of stimuli with a deviation of no more than plus or minus 10 degrees. The assessment was carried out once per person under standardised conditions in the soundproof booth.

—

Secondary

Measure	Time frame
Correlation between objective directional hearing performance in the ERKI test (angular deviation in degrees, hit rate within the reference range as a percentage) and the duration of bilateral cochlear implant use in months. Correlation between objective directional hearing performance in the ERKI test and the subjective self-assessment of directional hearing, measured as the total score of a standardised questionnaire, expressed as a percentage. Correlation between side-specific localisation bias in the ERKI test (in degrees) and asymmetry in side-separated speech understanding, measured as the difference in percentage word intelligibility between the left and right ears in the Freiburg Monosyllable Test.	—

Measure

Time frame

Correlation between objective directional hearing performance in the ERKI test (angular deviation in degrees, hit rate within the reference range as a percentage) and the duration of bilateral cochlear implant use in months. Correlation between objective directional hearing performance in the ERKI test and the subjective self-assessment of directional hearing, measured as the total score of a standardised questionnaire, expressed as a percentage. Correlation between side-specific localisation bias in the ERKI test (in degrees) and asymmetry in side-separated speech understanding, measured as the difference in percentage word intelligibility between the left and right ears in the Freiburg Monosyllable Test.

—

Countries

Germany

Contacts

Public ContactSusann Thyson

Hörzentrum | Klinik für Hals-Nasen-Ohrenheilkunde, UKD

susann.thyson@hhu.de+492118108142

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Aug 10, 2026