Upper motor neuron syndrome - definition

a collection of deficits that can occur after damage to an upper motor neuron. Common symptoms of upper motor neuron syndrome include: weakness or paralysis, spasticity, increased muscle tone, over-responsive reflexes, and a positive Babinski sign, which occurs when the bottom of the foot is stroked and—instead of the toes curling down—the big toe extends up and the other toes fan out.

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2-Minute Neuroscience: Motor Neurons

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YOUR BRAIN, EXPLAINED

Sleep. Memory. Pleasure. Fear. Language. We experience these things every day, but how do our brains create them? Your Brain, Explained is a personal tour around your gray matter. Building on neuroscientist Marc Dingman’s popular YouTube series, 2-Minute Neuroscience, this is a friendly, engaging introduction to the human brain and its quirks using real-life examples and Dingman’s own, hand-drawn illustrations.

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