title: Brain power.
mesh_terms: D024803:Biomedical Enhancement / Q000941:ethics* / Q000379:methods; D001921:Brain / Q000502:physiology*; D003071:Cognition / Q000502:physiology*; D006801:Humans; D012651:Self Medication / Q000009:adverse effects / Q000941:ethics; D065908:Transcranial Direct Current Stimulation / Q000009:adverse effects; D050781:Transcranial Magnetic Stimulation / Q000009:adverse effects / Q000941:ethics