Recordability of the vestibular cerebellar evoked potential.
Daniel J Romero, Richard A Roberts, Danielle Clay and 4 others
PMID 40607711WHAT IT FOUND
The vestibular cerebellar evoked potential is difficult to record reliably, appearing in fewer than 60% of healthy young adults.
Responses were strongest at midline and contralateral scalp sites, with left-ear stimulation yielding larger amplitudes. Reference electrode choice had negligible impact.
Key findings
01The response rate never exceeded 60% across all conditions, with significant variability between participants and electrode sites.
02Contralateral recording sites had higher response rates (~64%) compared to ipsilateral sites (<30%), while midline sites were ~58%.
03Using the nose tip as a reference electrode prolonged latency by less than 1 millisecond compared to the contralateral earlobe, with no difference in amplitude or response rate.
STILL TO COME
How it was doneWhat they foundWhat it means for SLPs
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What it does not show
The study included only 15 healthy young adults, limiting generalizability to clinical populations or older adults. The stimulus level (125 dB pSPL) was lower than in some previous studies, which may have contributed to the low response rates. The origin of the VsCEP (neurogenic vs. myogenic) remains unclear, complicating clinical interpretation. Response rates were highly variable between participants, suggesting individual anatomical or physiological factors influence recordability.
Declared interests
The authors declared no conflicts of interest. The study was approved by the university’s institutional review board.
The easy way to misread this
Do not interpret a missing VsCEP response in a patient as evidence of cerebellar or vestibular pathology. The test failed to elicit a response in more than 40% of healthy young adults in this study, meaning a null result is common and not necessarily abnormal.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →