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Learn the vestibular system

Short, visual guides to semicircular canal anatomy, Ewald’s laws and BPPV. Each takes a few minutes, ends with quick questions, and works even better with the model in your hand.

Start here · 3 minSemicircular canal anatomy, in 3DThe three canals, how they’re angled, the coplanar pairs, and the ampulla and cupula. Physiology · 3 minEwald’s laws, explained simplyWhich flow excites and which inhibits, why the canals differ, and the head impulse test. Clinical · 4 minBPPV: which canal?Read the nystagmus, choose the manoeuvre, and spot the red flags. Clinical · 6 minThe head impulse test explained: testing each semicircular canalPush-pull canal pairs, corrective saccades and vHIT basics, with a hands-on canal-plane exercise.

Learn faster with a model in your handAnatomically accurate, with a + or − on every ampulla.

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For education only, not medical advice. Reviewed by a Consultant Neurologist and Neuro‑Otologist.