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A concussion expert says Tua Tagovailoa's stiffened hands were 'primitive' response that suggests damage to brain's cortex
Tua Tagovailoa left the Dolphins Week 4 game on a stretcher with a head and neck injury. After Tagovailoa hit the ground, his hands stiffened in an unnatural position. Neurologist and concussion expert Chris Nowinski said Tagovailoa showed signs of "decorticate posturing," a severe, "primitive" brain response that indicates damage to the cortex.