(A) Neuron dropping curves for unimanual joystick control,(B) bimanual joystick control using two 2D decoding models (C), inter-hand spacing, and (D), and bimanual joystick control using one 4D decoding model. Curves are shown separately for each area, indicated by color. (E–F) Offline predictions using 2D UKF for unimanual movements (E) and 4D UKF for bimanual movements (F).