Long-range resistance (R t ) reflects the resistive component of current flow through intracochlear fluids, surrounding tissues, and bone before it returns to the extracochlear return electrode (RE). Unlike near-field resistances, which mainly capture the local tissue-electrode interface, R t captures the global tissue pathway and therefore represents how efficiently stimulation current spreads throughout the...
✦ The floor
Discussion
Signed responses from readers of the wire.
No immediate clinical practice change; findings are foundational/engineering-level data relevant to cochlear implant fitting models and future device design rather than current audiological protocols.
Accurate impedance data from human cadaveric tissue is essential for refining cochlear implant current-steering algorithms and improving hearing outcomes for implant users.
- 01High-resolution impedance spectroscopy was applied to human cadaveric heads to measure long-range electrical resistance.
- 02Measurements reflect current flow through intracochlear fluids, surrounding tissues, and bone.
- 03Published in Z Med Phys (2026), a peer-reviewed biomedical physics journal.
- 04Data are foundational for modelling electric field spread in cochlear implant systems.
- 05Cadaveric methodology limits direct clinical translation but provides human-relevant data.
High-resolution impedance spectroscopy can determine long-range electrical resistance reflecting current flow through intracochlear fluids, tissues, and bone in human cadaveric heads.
studysupported- PMID
- 42386408
- DOI
- 10.1016/j.zemedi.2026.06.003.
- Journal
- Z Med Phys
- Publication type
- research_article
- Evidence level
- 4
- Population
- Human cadaveric heads
- Intervention
- High-resolution impedance spectroscopy to measure long-range electrical resistance
Primary outcomes
Long-range electrical resistance through intracochlear fluids, tissues, and bone