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Spinal cord neurons that control skilled limb movement identified

Two types of neurons that enable the spinal cord to control skilled forelimb movement have been found by researchers. The first is a group of excitatory interneurons that are needed to make accurate and precise movements; the second is a group of inhibitory interneurons necessary for achieving smooth movement of the limbs. The findings are important steps toward understanding normal human motor function and potentially treating movement disorders that arise from injury or disease.
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