1. A method for modulation, augmentation and/or stimulation of neural tissue and/or neural tissue related functionality, comprising: attaching to the skin of the ear of a patient an acrylic electrode array housing including a sterling silver stimulation electrode and a reference electrode connected with carbon fibre wires to a stand-alone electrical nerve stimulator; applying electrical stimuli transdermally at the pinna, wherein a monophasic-modified rectangle impulse with a pulse width of 250 ms, electrical current amplitude between 4 mA and 8 mA stimulation frequency of 25 Hz is used; wherein the electrical stimuli applied transdermally at the pinna stimulate the Ramus auricularis Nervi vagi,-neural tissue and/or neural tissue related functionality, and trigger and/or influence neural activity related local perfusion changes; performing a BOLD functional MRI session.