The present invention refers to systems for selective spatiotemporal electrical neurostimulation of the spinal cord. In particular, it is an object of the invention a system comprising: a signal processing device receiving signals from the subject and operating signal-processing algorithms to elaborate stimulation parameter settings, operatively connected with an Implantable Pulse Generator (IPG) receiving stimulation parameter settings from said signal processing device and able to simultaneously deliver independent current or voltage pulses to one or more multiple electrode arrays; operatively connected with one or more multi-electrode arrays suitable to cover at least a portion of the spinal cord of said subject for applying to said subject a selective spatiotemporal stimulation of the spinal circuits and/or dorsal roots, wherein said IPG is operatively connected with said one or more multi-electrode arrays to provide a multipolar stimulation. Such system advantageously allows achieving effective control of locomotor functions in a subject in need thereof by stimulating the spinal cord, in particular the dorsal roots, with spatiotemporal selectivity.