The present application relates to an active electronics module (10) for a system for brain applications, whereby the active electronics module is connectable or connected to at least one main module (110) on the one side and on the other side connectable or connected to a lead (300) having a plurality of electrodes (132) at its distal end, whereby the active electronics module comprises at least one cross-point switch matrix means (20) configured such that at least one of the electrodes of the lead can be connected with one or more inputs and/or outputs of the main module.