The invention relates to a device for decoupling and/or desynchronizing neural brain activity, comprising: at least one sensor (3) for measuring at least one signal which reproduces the development in time of activity of a neuron population to be decoupled and/or of a neuron population to be desychronized one electrode (2) with at least one electrode surface and a control system (4) configured to receive the measurement signals of the sensor, to process the measurement signals and to feed the processed measurement signals as stimulation signals into the electrode, the processing of the measurement signals consisting of one or more of filtering the measurement signals, delaying the measurement signals, amplifying the measurement signals, and changing the polarity of the measurement signals.