Device for transcranial brain stimulation

An apparatus for transcranial brain stimulation comprising:

• an acoustic detection device for detecting acoustic signals as analog sound signals;
• an electrode arrangement comprising a plurality of electrodes which can be arranged in an operating configuration on a skull of a human being or animal, wherein in the operating configuration during energization of the electrodes a current flow is generated through at least one auditory cortex of a cerebral cortex in the skull;
• and
• a signal conversion device configured to:
• i) convert a respective analog sound signal into a first digital signal, the course of which corresponds to the respective analog sound signal, and to determine a second digital signal from the first digital signal by extracting an envelope from the first digital signal and shifting the envelope by a predetermined amount of time greater than zero into the future or leaving it unshifted;
• and
• ii) convert the second digital signal into a current, the course of which corresponds to the second digital signal, and to energize the electrode arrangement in the operating configuration with this current.