How the inner-ear nerve cells that carry sound develop and connect
Mechanisms of Auditory Circuit Development
This work looks at how the nerve cells that send sound from the ear to the brain form and diversify, with the goal of helping people with hearing loss tied to genetic or hair-cell problems.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Johns Hopkins University NIH-funded |
| Lab location | 1 site (Baltimore, United States) |
| Project ID | NIH-11225132 on NIH RePORTER |
What this research studies
From a patient's point of view, the researchers are using genetically modified mice and a mix of imaging, gene-level analysis, electrical recordings, and hearing tests to map how spiral ganglion neurons (the nerve cells that carry sound signals) develop and connect to hair cells. They will track different neuron types, see how known deafness mutations change those patterns, and test what signals from hair cells guide neuron specialization. The team combines anatomy, genomics, and physiology to build a detailed picture of connectivity and function. Findings aim to explain how defects in hair cells or neurons lead to hearing problems and to point to mechanisms that could be targeted later.
Who could benefit from this research
Good fit: People (including infants or children) with inherited or early-onset hearing loss caused by hair-cell or auditory neuron gene changes would be most relevant to the questions this research addresses.
Not a fit: Patients whose hearing loss is primarily due to aging, noise exposure, or middle-ear problems unrelated to hair-cell or nerve development are less likely to benefit directly from this project in the near term.
Why it matters
Potential benefit: If successful, this work could reveal root causes of some genetic and developmental forms of hearing loss and suggest new directions for therapies or hearing restoration.
How similar studies have performed: Prior animal and genetic studies have already shown that auditory neurons are diverse and that some genes affect hearing, but translating those findings into treatments remains early and still developing.
Where this research is happening
Baltimore, United States
- Johns Hopkins University — Baltimore, United States (Active)
Researchers
- Principal investigator: Mueller, Ulrich — Johns Hopkins University
- Study coordinator: Mueller, Ulrich
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page below.