This paper reviews the vestibular neural mechanisms that generate vertigo and nystagmus. Angular acceleration activates a group of neurons in the brainstem that cause the person to have the sensation of turning. But long after the end of the acceleration, these neurons continue to fire; they perseverate, causing afternystagmus, and I contend that this gives the false sensation that the person is continuing to turn...
✦ The floor
Discussion
Signed responses from readers of the wire.
No actionable change to current clinical practice; this is a mechanistic review that deepens theoretical understanding of skull vibration-induced nystagmus but does not provide new diagnostic or treatment protocols.
A clearer mechanistic framework for skull vibration-induced nystagmus could improve interpretation of this vestibular test and potentially refine its clinical application in diagnosing inner-ear asymmetries.
- 01Reviews the role of the velocity storage integrator (VSI) in generating skull vibration-induced nystagmus (SVIN).
- 02SVIN is an emerging vestibular test used to detect inner-ear asymmetry.
- 03Mechanistic understanding of the VSI may explain SVIN response patterns seen clinically.
- 04Paper is a narrative/theoretical review, not an empirical study.
- 05Published in Audiology Research.
The velocity storage integrator plays a central role in generating skull vibration-induced nystagmus.
opinionpartially supported- PMID
- 42930354
- DOI
- 10.3390/audiolres16050156.
- Journal
- Audiology Research
- Publication type
- review
- Evidence level
- 5
- Population
- Not applicable; theoretical/mechanistic review
- Intervention
- Skull vibration-induced nystagmus (SVIN) testing
Primary outcomes
Characterisation of velocity storage integrator mechanisms underlying SVIN; Theoretical framework for interpreting SVIN in vestibular diagnosis