Skipping the Spinal Cord (video) Washington University in St. Louis Share Print E-Mail Loading video... Caption The goal of brain-computer interfaces is to control muscles directly from the brain's cortex, skipping the intervening spinal cord. In this movie each yellow line represents the instantaneous firing rate of a neuron in the motor cortex. The yellow spikes morph as the man moves because each neuron is tuned to a different direction in space. If the vectors from all of the neurons are added together (yellow arrow), they predict the arm's next movement (blue arrow). Credit Daniel Moran Usage Restrictions Please contact Daniel Moran at email@example.com and ask for permission Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.