The human brain is at the core of every­thing we do, from the every-day deci­sions we make while work­ing or dri­ving to the lifestyles that con­tribute (or not) to depres­sion and demen­tia. And a grow­ing range of neu­rotech­nolo­gies are poised to become ubiq­ui­tous, per­va­sive: espe­cial­ly those that, being dig­i­tal, are scal­able and rel­a­tive­ly inex­pen­sive, and […]