A Brain Implant that Thinks

A Brain Implant that Thinks: The researchers used an array of electrodes to record the electrical activity of neurons in the prefrontal cortex of monkeys while they performed a memory task...
The five monkeys in the study were trained to play a matching game in which they were shown an image on a screen and then had to use hand movements to steer a cursor to that same image...
From their recordings in the prefrontal cortex, the research team extrapolated a mathematical model of the electrical activity of neurons involved in the movement decision...
In the new study, the model took multiple signals produced by the brain layer that integrates sensory information related to the task. It then extracted the relevant information to choose a particular movement. The implant can stimulate neurons in order to influence the decision to move the hand to select the correct image.