title: An experimental study of the second-signaling systems of man through the printed language.
mesh_terms: D001307:Auditory Perception; D002540:Cerebral Cortex / Q000502:physiology; D003214:Conditioning, Classical; D006801:Humans; D007802:Language; D008027:Light; D009068:Movement; D009949:Orientation; D010306:Parotid Gland; D011327:Printing; D011932:Reading; D012018:Reflex; D012472:Salivation; D013016:Sound; D013060:Speech; D014796:Visual Perception; D014956:Writing