An external control device (18) for use with a neurostimulator (14) coupled to a plurality of electrodes (26) capable of transmitting energy electrical stimulation to tissue in which the electrodes are implanted (26), comprising: circuitry output (86) configured to transmit the neurostimulator electrode combinations (14) a user interface including a display device (76), at least one first control element (120) configured to be actuated to selectively position the external control device (18) between a first mode and a second mode, and at least a second control (116, 118) configured to be driven to define a first one or more combinations candidates electrode when the external control device is in the first mode and to define a second one or more combinations candidates electrode when the device external control is in the second mode and a processor (80) when the external control device (18) is in the first mode, configured to simulate a volume of tissue activation based on each of the first one or more combinations candidates electrode, while avoiding the output circuitry (86) transmits the first one or more combinations candidates electrode to the neurostimulator (14), and when the external control device (18) is in the second mode, configured to enable the output circuitry (86) transmit the second one or more candidate combinations to the neurostimulator electrode (14).Un dispositivo de control externo (18) para su uso con un neuroestimulador (14) acoplado a una pluralidad de electrodos (26) capaces de transmitir energía de estimulación eléctrica al tejido en el que están implantados los electrodos (26), que comprende: circuitería de salida (86) configurada para transmitir combinaciones de electrodos al neuroestimulador (14) una interfaz de usuario que incluye un dispositivo de pantalla (76), al menos un primer elemento de control (120) configurado para accionarse para colocar selectivamente el dispositivo de control externo (18) entre un primer modo y un segundo m
