Practice
Compare
Pick two patterns to compare. Overlay superimposes both SOT signatures on one set of axes. Panels shows each pattern alongside a normal reference. Useful for side-by-side teaching of similar patterns (e.g. vestibular neuritis vs Ménière's, or central vs aphysiologic).
Acute vestibular neuritis
In acute VN, Park et al. (2017) found that ~70% of patients show abnormality on C5 and/or C6. The pattern is more severe than chronic compensated loss, with frequent falls on C5/C6 and high intertrial variability reflecting the uncompensated state.
Central vestibular / cerebellar disorder
Central involvement is suggested by the triad of (1) abnormality across multiple SOT conditions rather than the selective C5/C6 pattern, (2) prolonged MCT latencies indicating long-loop pathway involvement, and (3) failure to adapt across ADT trials — the cerebellar signature.