Apparatus and method for stimulation of neural tissue by means of optical stimuli

The invention relates to a device (100) with a control unit (10) and a plurality of stimulation units (11) which are implanted into the body of a patient and generate visual stimuli (12), the visual stimuli (12) in the stimulation of neurons which have a pathologically synchronous and oscillatory neuronal activity, to reset the phase of the neural activity of neurons, and the control unit (10) the stimulation units (11) such that at least two of the stimulation units (11) the phases of each stimulated neurons at different Reset times.