{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,20]],"date-time":"2026-02-20T21:32:34Z","timestamp":1771623154315,"version":"3.50.1"},"reference-count":42,"publisher":"FapUNIFESP (SciELO)","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Trends Psychiatry Psychother."],"abstract":"<jats:p>Abstract Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique that modulates cortical excitability. It is devoid of serious adverse events and exerts variable effects on cognition, with several research findings suggesting that it can improve memory, verbal and mathematical skills. Because tDCS devices are low-cost, portable and relatively easy to assemble, they have become available outside of the medical setting and used for non-medical (\u201ccosmetic\u201d) purposes by laypersons. In this sense, tDCS has become a popular technique aiming to improve cognition and the achievement of a better performance not only at work, but also in other fields such as sports, leisure activities (video games) and even the military. In spite of these unforeseen developments, there has been a general paralysis of the medical and regulatory agencies to develop guidelines for the use of tDCS for cosmetic purposes. Several challenges are present, most importantly, how to restrict tDCS use outside of the medical setting in face of variable and sometimes conflicting results from scientific research. This article aims to describe the popular use of tDCS, in light of the pillars of neuroethics, a branch of bioethics relative to brain research. Between two possible but extreme solutions \u2013 total release or total restriction of tDCS \u2013 it is paramount to develop a spectrum of alternatives, which may vary over time and in different cultural backgrounds.<\/jats:p>","DOI":"10.1590\/2237-6089-2017-0075","type":"journal-article","created":{"date-parts":[[2017,11,11]],"date-time":"2017-11-11T22:42:41Z","timestamp":1510440161000},"page":"232-238","source":"Crossref","is-referenced-by-count":8,"title":["Primum non nocere or primum facere meliorem? Hacking the brain in the 21st century"],"prefix":"10.1590","volume":"39","author":[{"given":"Lucas","family":"Borrione","sequence":"first","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andre R.","family":"Brunoni","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo,  Brazil; Ludwig-Maximilians-University,  Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"530","published-online":{"date-parts":[[2017,11,13]]},"reference":[{"key":"ref1","doi-asserted-by":"crossref","DOI":"10.3389\/fpsyg.2017.00685","article-title":"Modulation of brain activity with noninvasive transcranial direct current stimulation (tDCS): clinical applications and safety concerns","volume":"8","author":"Zhao H","year":"2017","journal-title":"Front Psychol"},{"key":"ref2","doi-asserted-by":"crossref","first-page":"96","DOI":"10.1016\/j.pnpbp.2010.09.010","article-title":"Transcranial 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