Bilateral bone conduction stimulation

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

DRKS

Registry ID

DRKS00033509

Enrollment

Registered

2024-06-03

Start date

2026-04-01

Completion date

Unknown

Last updated

2026-06-01

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

Conditions

H91.9

Interventions

Group 1: The hearing threshold of normally hearing subjects is measured using bone conduction stimulation and ultrasound stimulation. In addition, bone conduction stimulation and ultrasound stimulatio

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Normal hearing defined as hearing threshold < 20 dB for 500, 1000, 2000 and 4000 Hz.

Exclusion criteria

Exclusion criteria: Previous ear surgery, age 20 dB for 500, 1000, 2000 or 4000 Hz.

Design outcomes

Primary

Measure	Time frame
Hearing thresholds in 10 normal hearing subjects are determined for 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz for ultrasound and bone conduction stimulation. Additionally, intracochlear pressure is measured in 5 cadaver heads for the same stimulation modes.	—

Secondary

Measure	Time frame
Three-dimensional velocity of the skull surface, middle ear ossicles, promontory and the otic capsula are measured.	—

Countries

Switzerland

Contacts

Public ContactChristof Röösli

Universitätsspital Zürich

christof.roeoesli@usz.ch+41442555860

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Jun 11, 2026