To avoid image blurring, the vestibulo-ocular (VOR) and the optokinetic (OKR) reflexes stabilize gaze. In all vertebrates, the VOR is mediated via direct projections from the vestibular nuclei to the motor nuclei that control the extraocular muscles....
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Discussion
Signed responses from readers of the wire.
No actionable change — this is a basic-science neuroanatomy study in a non-mammalian animal model with no direct clinical application at this time.
Understanding the ancient, evolutionarily conserved circuits driving vestibulo-ocular and optokinetic reflexes in lampreys may offer foundational insights into balance disorders and reflex pathways relevant to vestibular rehabilitation research.
- 01Mapped brain projections (inputs) to vestibular nuclei in lamprey, a primitive vertebrate model.
- 02Focused on neural circuits underlying the vestibulo-ocular reflex (VOR — the reflex that stabilizes vision during head movement) and optokinetic reflex (OKR — the reflex that helps eyes track moving images).
- 03Lamprey models are used to study ancestral vertebrate neural organization.
- 04Findings are basic-science and not directly translatable to clinical practice.
- 05Published in Frontiers in Neuroanatomy (2026).
Brain inputs to vestibular nuclei in lampreys underlie vestibulo-ocular and optokinetic reflex circuits.
studyunclear- PMID
- 42582158
- DOI
- 10.3389/fnana.2026.1875207.
- Journal
- Frontiers in Neuroanatomy
- Publication type
- research_article
- Evidence level
- na
- Population
- Lampreys (non-mammalian vertebrate animal model)
- Intervention
- Neuroanatomical mapping of brain projections to vestibular nuclei
Primary outcomes
Identification of brain regions projecting to vestibular nuclei; Neural circuit mapping of VOR and OKR pathways