/OBJECTIVES: Skull vibration-induced nystagmus (SVIN) is a robust sign of vestibular asymmetry, yet its relationship with tests of impulsive canal function, short-latency otolithic reflexes, and sustained visuo-vestibular processing remains incompletely defined....
✦ The floor
Discussion
Signed responses from readers of the wire.
SVIN may detect vestibular asymmetries missed by vHIT and VEMPs, but this is a case series with a hypothesis-generating design — do not alter diagnostic protocols until controlled prospective studies confirm the findings.
If validated, SVIN could serve as a complementary vestibular test that captures clinically significant imbalances invisible to the current standard battery, improving diagnostic yield for dizzy patients.
- 01Skull vibration-induced nystagmus (SVIN) detected vestibular asymmetries not found by vHIT, VEMPs, or velocity-storage tests.
- 02Authors propose a 'temporal-domain hypothesis' to explain the dissociation between SVIN and other vestibular measures.
- 03Study design is a clinical-physiological case series — hypothesis-generating, not confirmatory.
- 04Findings suggest SVIN may reflect a distinct physiological mechanism within the vestibular system.
- 05Results cannot be generalised without larger, prospective, controlled studies.
SVIN can reveal vestibular asymmetries that are dissociated from and not detectable by vHIT, VEMPs, and velocity-storage-related responses.
studypartially supportedA temporal-domain mechanism explains skull vibration-induced nystagmus independently of other vestibular pathways.
opinionunclear- PMID
- 42776765
- DOI
- 10.3390/audiolres16050123.
- Journal
- Audiology Research
- Publication type
- research_article
- Evidence level
- 4
- Population
- Clinical patients presenting with vestibular symptoms undergoing SVIN, vHIT, and VEMP testing
- Intervention
- Skull vibration-induced nystagmus (SVIN) testing
- Comparator
- video Head Impulse Test (vHIT), VEMPs, and velocity-storage-related vestibular responses
Primary outcomes
Presence and characteristics of skull vibration-induced nystagmus; Dissociation between SVIN findings and vHIT/VEMP results; Validation of a temporal-domain hypothesis for SVIN