Voluntary movements are one of the brain’s main “outputs,” yet science still knows very little about how networks of neurons plan, initiate and execute them. Now, researchers from Columbia University and the Champalimaud Center for the Unknown in Lisbon, Portugal, say they have discovered an “activity map” that the brain uses to guide animals’ movements. The findings, published Wednesday in Neuron, could advance our understanding of how the brain learns new movements—and of what goes wrong in related disorders such as Parkinson's disease.
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