Sonia Vovan | Concussion + Vestibular Physiotherapist on Instagram: "🔍 Back to the Basics: The Foundation of BPPV! 🔄 Watch this demonstration of the Dix-Hallpike and Roll Tests using @vestibularfirst infrared video goggles, which allow us to observe what’s happening in real time during these critical diagnostic maneuvers. See how the vestibular model shows the movement of otoconia flowing through the semicircular canal during head positioning—the root cause of those disorienting vertigo spells