Neuropsychologist Digby-Ormond-Brown offers us a snapshot of the microcapillaries in the brain, which form a vascular labyrinth supplying blood to the brain tissue. He brings the blood supply in the brain to life with some unique graphics in this short clip. Digby talks about how tiny these capillaries are, such that red blood cells have to change shape to fit through these microcapillaries. Digby explains the very real implications for the dangers of cholesterol, should the red blood cells be unable to pass through and blood supply become disrupted, leading to possible stroke. If you're a neuroscience enthusiast, watch Digby's full CEU-accredited talk on the Neuropsychology of HIV here.