monkeys have been moving cursors around on screens (or more elaborate physical or virtual effectors) using cortical implants for nearly 20 years now. the experi

monkeys have been moving cursors around on screens (or more elaborate physical or virtual effectors) using cortical implants for nearly 20 years now. the experiments that are published when they do this are well designed. target placements are randomized, task performance establishes irrefutable control- sometimes believed to be as a result of learning how to modulate neural activity to drive the system, and sometimes believed to be a result of passive listening (and learning) of non-adapted neural activity. it is likely very possible to do what they have claimed to have done. the big problem has often been intersession stability. some days are good, some days are bad and some days don't work at all.