What does this research mean for the field?

Nitroglycerin-provoked vestibular migraine attacks induce frequent subjective vestibular symptoms but do not cause uniform group-level changes in nystagmus slow phase velocity, suggesting the condition involves altered central sensory processing rather than vestibulo-oculomotor output changes. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To determine whether experimental migraine provocation with intravenous nitroglycerin induces measurable nystagmus and ocular motor changes in individuals with vestibular migraine.

September 7, 2026Headache The Journal of Head and Face PainOpen Access

Visual, vestibular, and ocular motor changes during nitroglycerin‐triggered vestibular migraine

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Authors

MVMaria Dolores Villar‐Martínez FPFrancesca Puledda CDCaroline Domingos‐Belo

Discussion

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Overview

Pharmacological provocation study observes persistent subjective dizziness without objective nystagmus changes in vestibular migraine, indicating central sensory hypersensitivity.

Key Points

To determine whether experimental migraine provocation with intravenous nitroglycerin induces measurable nystagmus and ocular motor changes in individuals with vestibular migraine.
Conducted a prospective, within-subject repeated-measures pharmacological provocation study in 20 participants with definite vestibular migraine (median age 32 years, 16 females) at a clinical research facility in London.
Used 3D video-oculography to measure total slow-phase velocity (SPV) of nystagmus across five gaze positions at baseline, following intravenous nitroglycerin provocation, and after subcutaneous sumatriptan administration.
Nitroglycerin provocation induced headaches in 20/20 participants and subjective vestibular symptoms in 14/20, but produced no significant group-level change in total SPV compared to baseline (β = 0.118, SE = 0.267, P = 0.658).
Subcutaneous sumatriptan did not significantly alter total SPV compared to baseline (β = -0.078, SE = 0.278, P = 0.780), yielding estimated marginal means of 1.87°/s (95% CI 1.02 to 3.41) at baseline, 2.10°/s (95% CI 1.16 to 3.80) post-NTG, and 1.73°/s (95% CI 0.93 to 3.19) post-sumatriptan.
Provocation triggered visual symptoms in 10/20 participants and dissociative or Alice in Wonderland syndrome-type perceptual disturbances in 6/20 participants.

Cite This Study

Villar‐Martínez et al. (2026) studied this question.

synapsesocial.com/papers/6a9e858ac3034f961570dc2d https://doi.org/10.1111/head.70194

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September 7, 2026Headache The Journal of Head and Face PainOpen Access

Visual, vestibular, and ocular motor changes during nitroglycerin‐triggered vestibular migraine

View Full Paper

Ask AI

Bookmark

Authors

MVMaria Dolores Villar‐Martínez FPFrancesca Puledda CDCaroline Domingos‐Belo

Discussion

Member takes

Overview

Pharmacological provocation study observes persistent subjective dizziness without objective nystagmus changes in vestibular migraine, indicating central sensory hypersensitivity.

Key Points

To determine whether experimental migraine provocation with intravenous nitroglycerin induces measurable nystagmus and ocular motor changes in individuals with vestibular migraine.
Conducted a prospective, within-subject repeated-measures pharmacological provocation study in 20 participants with definite vestibular migraine (median age 32 years, 16 females) at a clinical research facility in London.
Used 3D video-oculography to measure total slow-phase velocity (SPV) of nystagmus across five gaze positions at baseline, following intravenous nitroglycerin provocation, and after subcutaneous sumatriptan administration.
Nitroglycerin provocation induced headaches in 20/20 participants and subjective vestibular symptoms in 14/20, but produced no significant group-level change in total SPV compared to baseline (β = 0.118, SE = 0.267, P = 0.658).
Subcutaneous sumatriptan did not significantly alter total SPV compared to baseline (β = -0.078, SE = 0.278, P = 0.780), yielding estimated marginal means of 1.87°/s (95% CI 1.02 to 3.41) at baseline, 2.10°/s (95% CI 1.16 to 3.80) post-NTG, and 1.73°/s (95% CI 0.93 to 3.19) post-sumatriptan.
Provocation triggered visual symptoms in 10/20 participants and dissociative or Alice in Wonderland syndrome-type perceptual disturbances in 6/20 participants.

Cite This Study

Villar‐Martínez et al. (2026) studied this question.

synapsesocial.com/papers/6a9e858ac3034f961570dc2d https://doi.org/10.1111/head.70194

View Full Paper

Ask AI

Bookmark