title: Alpha feedback and relaxation: a cautionary note.
mesh_terms: D000161:Acoustic Stimulation; D000513:Alpha Rhythm; D001007:Anxiety; D002986:Clinical Trials as Topic; D003216:Conditioning, Operant; D005246:Feedback; D005260:Female; D006801:Humans; D010919:Placebos; D012063:Relaxation; D012649:Self Concept
chemical_list: D010919:Placebos