This is the screen as viewed by the monkey during experiments: a first-person perspective of the rhesus monkey avatar limbs. The movements of both virtual arms are decoded in real-time from brain activity while the monkey's own arms were not permitted to freely move. The monkey must move the virtual arms to the circular targets to receive a small juice reward. This video relates to a paper that appeared in the Nov. 6, 2013, issue of Science Translational Medicine, published by AAAS. The paper, by Dr. P.J. Ifft at Duke University in Durham, N.C., and colleagues was titled, "A Brain-Machine Interface Enables Bimanual Arm Movements in Monkeys."