How acetylcholine shapes sound processing in the brain's auditory midbrain
Mechanisms of Cholinergic Signaling in the Inferior Colliculus
This project looks at how the brain chemical acetylcholine changes how sounds are processed in a midbrain area to help explain hearing problems and sensory differences in autism, aging, and hearing loss.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | University of Michigan at Ann Arbor NIH-funded |
| Lab location | 1 site (Ann Arbor, United States) |
| Project ID | NIH-11324318 on NIH RePORTER |
What this research studies
From a patient perspective, scientists will use high-resolution imaging and cell-level recordings in the auditory midbrain (the inferior colliculus) — primarily in animal models — to see how acetylcholine changes activity in specific neurons. They will manipulate acetylcholine signaling and its receptors while measuring how sounds are encoded and how neural circuits adapt. The team will map which cell types and synaptic inputs are affected, and how cholinergic signals related to arousal or reward alter sound gating. The work aims to explain why some people have trouble filtering or adapting to sounds.
Who could benefit from this research
Good fit: People who experience sound sensitivity, poor sound filtering, or auditory gating problems—including some autistic individuals and older adults with hearing loss—would be the most relevant group.
Not a fit: Patients with health issues unrelated to hearing or auditory processing, or those needing immediate clinical treatment, are unlikely to get direct benefit from this basic lab-based research.
Why it matters
Potential benefit: If successful, this work could point to new targets for therapies that improve sound filtering and reduce sensory overload in autism, age-related hearing loss, and auditory gating disorders.
How similar studies have performed: Previous animal studies show acetylcholine can alter auditory neuron responses and drive plasticity, but detailed mapping of the specific cells and synapses in the inferior colliculus is relatively new.
Where this research is happening
Ann Arbor, United States
- University of Michigan at Ann Arbor — Ann Arbor, United States (Active)
Researchers
- Principal investigator: Roberts, Michael Thomas — University of Michigan at Ann Arbor
- Study coordinator: Roberts, Michael Thomas
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.