In the neural noise-cancellation mechanism, reduced auditory thalamic reticular nucleus (TRN) activity is thought to result in tinnitus. As a biomarker of TRN activity is sleep spindles, we performed an exploratory study to ask whether individuals with tinnitus would exhibit altered sleep spindles compared with controls.

No immediate clinical practice change, but this study provides early neurophysiological evidence relevant to tinnitus mechanisms that researchers and specialist clinicians should monitor.

Identifying objective sleep-based biomarkers of tinnitus could eventually enable diagnosis and treatment monitoring without relying solely on patient self-report.

1. 01Sleep spindles are brain activity patterns during sleep linked to a region called the thalamic reticular nucleus, which may filter noise.
2. 02Study compared surgically deafened adults with and without tinnitus — a rare, well-controlled population.
3. 03The neural noise-cancellation hypothesis proposes that tinnitus arises when the brain's filtering mechanism is disrupted.
4. 04Sleep spindles are explored as potential objective biomarkers for tinnitus.
5. 05Findings are preliminary and require replication in larger samples.

PMID

42109831

DOI

10.1016/j.cnp.2026.05.001.

Journal

Clinical Neurophysiology Practice

Publication type

research_article

Evidence level

3

Population

Surgically deafened adults with and without tinnitus

Intervention

Sleep spindle measurement (EEG) as a biomarker of thalamic reticular nucleus activity

Comparator

Surgically deafened adults without tinnitus