Quadcopters have incredible flying abilities, but if one loses just a single motor, it drops like a rock ... not need to be the case by keeping a quadcopter flying with only three motors.

Inverted Quadcopter? That generally means a crash ... Quadcopters control their flight by quickly varying the speed of rotation of each motor. Why not completely reverse the motor then?

The authors believe that to restore highly functional fine motor control, electrodes need to be placed closer to the neurons. The study notes a sixfold improvement in the user's quadcopter flight ...

According to the team’s results, the BrainGate array wired directly to motor neurons offered a “sixfold improvement” on the user’s quadcopter piloting when compared to an EEG system.