A biofeedback system and a display device for the use in the biofeedback system. Also disclosed is a method for a biofeedback treatment of a person or an animal. Biofeedback is a therapy method which is used in rehabilitation facilities, for example in the neurological rehabilitation. A neural signal magnitude below a certain threshold does not result in a muscle response, for example, because the provided stimulus is insufficient to trigger the muscle. In order to provide a patient with an intuitive feedback of the sub-threshold neural signal nevertheless, the signal is detected and made recognizable to the patient.
