Figure 4: Craniux system screenshot during population vector-based control. (a) Plot of the instantaneous activity of each feature used for cursor control along its preferred direction (blue) and the resultant population vector (red). (b) value plot indicating the distribution of values obtained during population vector training (blue) compared to the mean, 80th, 90th, and 95th percentile values obtained after training on 1000 iterations of target-shuffled data (red, dark orange, light orange, and yellow lines). The threshold above which features are chosen for use in the decoder is shown by the pink line. (c) values obtained during population vector training arranged by channel and frequency band. Note that the 70–120 Hz frequency band features show high values across all channels, consistent with the method used to generate the simulated ECoG signals. (d) The preferred direction distribution of all features. Red lines correspond to those features with values above the user-determined threshold, while white lines are those features falling below the threshold.