Theoretical model explains direction-changing nystagmus and test dissociation in Ménière's disease

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Frontiers in Medicine Published April 3, 2026 Medically reviewed May 1, 2026 DOI ↗ By Dr. Lars van Dijk, PhD · Surgical, Procedural & Diagnostic

Key Takeaway

Consider proposed Ménière's model as a theoretical framework requiring empirical validation.

A theoretical model, termed the Nystagmus Ménière Memory Model, was proposed to explain clinical observations in Ménière's disease. The model aims to account for the phenomenon where spontaneous nystagmus during an attack may evolve from beating toward the affected ear to beating away from it. It also addresses the observed dissociation where caloric weakness and abnormal SHIMP responses can coexist with preserved HIMP-vHIT gains. The core proposal is that fluctuating peripheral vestibular output interacts with a slower-updating central vestibular set-point, creating transient mismatches that manifest as nystagmus direction changes. The model does not rely on a pressure-based hypothesis of endolymphatic hydrops. It is presented as a functional weighting framework and explicitly does not imply strict one-to-one mappings between specific hair-cell types, afferent classes, and clinical test results. No empirical data, sample size, population details, or safety information were reported, as this is a conceptual proposal. The authors note this is a theoretical model generating testable predictions, not an empirical study with results. Key limitations include the absence of patient data or validation. The practice relevance is currently speculative, as the model requires direct testing in clinical populations to assess its utility in explaining or predicting attack patterns.

Study Details

Study typeCohort

EvidenceLevel 3

PublishedApr 2026

View Original Abstract ↓

The direction-changing behavior of spontaneous nystagmus during Ménière's disease attacks remains difficult to reconcile with static, lesion-based models. Nystagmus may evolve from an initial phase beating toward the affected ear to a later phase beating away, while vestibular tests often show dissociation: caloric weakness and abnormal SHIMP responses can coexist with preserved HIMP-vHIT gains. We propose the Nystagmus Ménière Memory Model (NMMM), a dynamic framework in which rapidly fluctuating peripheral vestibular output interacts with a centrally stored vestibular set-point established through compensation. Because this central set-point updates more slowly than peripheral vestibular fluctuations, transient mismatch can occur, resulting in nystagmus reversals and time-dependent test discordance. The model does not rely on a pressure-based hypothesis of endolymphatic hydrops. Instead, it integrates contemporary evidence supporting volume regulation changes, epithelial remodeling, and especially ionic/metabolic dysregulation as plausible mechanisms for reversible cochleo-vestibular dysfunction. We incorporate functional differences between vestibular afferent dynamics: regular afferents provide low-frequency rate coding (typically < 5 Hz), whereas irregular afferents support temporal coding optimized for high-frequency transients (typically >5 Hz). Importantly, this is a functional weighting framework and does not imply strict one-to-one mappings between hair-cell type, afferent class, and clinical tests. NMMM offers a time-resolved interpretation of attack-phase nystagmus and vestibular test dissociation and generates testable predictions for longitudinal prospective studies.