Training with a Neurofeedback System for the Control of a Drone Using Electroencephalographic Signals

In the present work, a portable electroencephalography system was developed in order to monitor the attention coefficient during a neurofeedback training using a drone as a visual stimulus. A four channels EEG signal acquisition system was developed using the 10-20 international standard, positioned at FP1, FP2, F3 and F4. The Power Spectral Density was calculated using the Modified Covariance method, and the attention coefficient was calculated using the ratio of the area under the curve between the high Beta and Theta bands. With the help of the Neurofeedback system and the drone, a series of eight tests of ten minutes each was carried out with a group of eleven volunteers. Only one session per day was carried out. In each test, the attention coefficient was calculated while the subject watched the drone performing one of the 16 determined trajectories. If the attention coefficient exceeded a threshold, the drone could continue moving, otherwise the drone remained static. As a result of using this neurofeedback system, it was found an increase in sustained attention time from 7.7 to 9.4 s, as well as a reduction in inattention time from 6.0 to 4.8 s.