EEG microstates and dynamic functional connectivity reveal stage-specific brain networks in subjective tinnitus

Tinnitus with normal hearing suggests central mechanisms, yet stage-specific brain network dynamics remain unclear. This study investigated stage-specific brain network patterns in normal-hearing tinnitus patients using electroencephalography (EEG) microstate and dynamic functional network (DFN) analyses....

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✦ The floor

Discussion

Signed responses from readers of the wire.

✦ Clinical Takeaway ✦

No actionable clinical change at this stage; findings are mechanistic and exploratory, but they reinforce that tinnitus involves central (brain-level) network disruption even when peripheral hearing is intact.

✦ Why It Matters ✦

Identifying stage-specific brain network signatures in tinnitus could eventually guide targeted neurostimulation or biofeedback therapies, moving tinnitus management beyond symptom masking.

✦ Key Points ✦

01EEG microstates and dynamic functional connectivity were used to map brain networks in tinnitus patients with normal hearing.
02Distinct, stage-specific brain network patterns were identified, implicating central (brain) rather than peripheral (ear) mechanisms.
03Participants had subjective tinnitus, meaning only the patient perceives the sound—no external cause detected.
04Findings support a neurological model of tinnitus rather than a purely cochlear one.
05Published in iScience (DOI 10.1016/j.isci.2026.116995), a peer-reviewed multidisciplinary journal.

✦ Claims & Evidence ✦

ClaimEvidenceSupport

EEG microstates and dynamic functional connectivity reveal stage-specific brain network patterns in subjective tinnitus.

studypartially supported

Tinnitus in patients with normal hearing is driven by central (brain-level) mechanisms rather than peripheral auditory dysfunction.

studypartially supported

✦ Research metadata ✦

PMID: 42571416
DOI: 10.1016/j.isci.2026.116995.
Journal: iScience
Publication type: research_article
Evidence level: 2b
Population: Adults with subjective tinnitus and normal peripheral hearing
Intervention: EEG microstate analysis and dynamic functional connectivity mapping

Primary outcomes

Identification of stage-specific EEG microstate patterns in tinnitus; Characterisation of dynamic functional connectivity differences across tinnitus stages

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