A neuronal tissue-machine interface apparatus includes an array of magnetically-responsive switches positioned in close proximity or contact to neuronal tissue of a human subject, wherein a magnetic environment of the plurality of magnetically-responsive switches varies along the array, and an antenna that is electrically connected to the array, wherein a subset of the magnetically-responsive switches respond to electromagnetic energy received by the antenna, and wherein the response of the subset of the magnetically-responsive switches includes modulation of an electrical current conducted by the subset of the magnetically-responsive switches.
