Understanding how the ear processes complex sounds
Official title: Human Cochlear Masking and Suppression Measured using Dynamic Stimuli
Funded at University of Southern California · NIH-10898510 · Data updated 2026-11-12
This study looks at how our ears and brains understand changing sounds, like music or speech, and how these sounds can sometimes make it harder to hear other noises, especially for people with hearing loss, with the goal of finding ways to make hearing aids and therapies better for everyone.
Quick facts
| Grant type | Fellowship grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | University of Southern California NIH-funded |
| Lab location | 1 site (Los Angeles, UNITED STATES) |
| Project start | July 1, 2024 |
| Project end | June 30, 2025 |
| Funding year | 2024 |
| Award (this year) | $77,284 |
| NIH project number | 1F32DC021862-01 |
| Project ID | NIH-10898510 on NIH RePORTER |
Who could benefit from this research
✓Could help
Ideal candidates include individuals experiencing hearing loss or auditory processing difficulties.
✕Less likely to help
Patients with normal hearing may not receive direct benefits from this research.
What this research studies
This research investigates how the human auditory system processes complex sounds that change over time and frequency. By examining the effects of different sound patterns, specifically upward and downward frequency sweeps, the study aims to understand how these sounds mask other tones and how this relates to hearing loss. The research combines human behavioral studies with physiological measurements from animal models to explore the mechanisms behind sound detection and masking. Patients may benefit from insights that could improve hearing aids and auditory therapies.
Why it matters
Potential benefit: If successful, this research could lead to improved treatments for hearing loss and better auditory devices.
How similar studies have gone: Previous studies have shown promising results in understanding auditory processing, but this specific approach is novel.
Where this research is happening
-
University of Southern California
Los Angeles, United States Active
Researchers
- Principal investigator: Salloom, William — University of Southern California
- Study coordinator: Salloom, William
Related research
Other NIH-funded projects on the same topics.
-
RNA dysregulation in a rare childhood brain disorder (PCH1b)
Researchers are studying a rare genetic brain disease in young children to understand how RNA processing goes wrong and leads to damage in the cerebellum and brainstem.
-
Studying how diverse signals come from similar molecules at glutamatergic synapses
A project at a university explores how synapses in the brain create different signals from a shared set of molecules, using a fruit-fly model to understand how this could relate to neurodevelopmental and neurodegenerative diseases.
-
How brain chemicals may influence tau clumps in Alzheimer’s disease
A study from USC explores how certain brain chemicals might influence the clumping of tau protein related to Alzheimer’s disease, aiming to identify factors that could affect disease progression.
-
GLP-1 medicines and brain health: real-world clues about dementia risk
A nationwide study will follow adults 21 and older using GLP-1 medicines to see how these drugs relate to memory, thinking, and dementia risk in real life.
-
Male pesticide exposure and reproductive health through epigenetics
This project looks at how a man’s exposure to pesticides might affect his fertility and the health of his future children through changes in DNA.
-
Global effort to harmonize fMRI findings in psychiatry
A large, international effort will standardize how brain MRI data are collected and analyzed in people with various mental health conditions to improve consistency and discovery.
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.