english: Author Robert Louis Stevenson then introduced the idea  of a logical left hemisphere competing with an emotional  right hemisphere represented by his characters Dr. Jekyll and Mr. Hyde.
non_english: Pisac Robert Luis Stivenson zatim je uveo ideju logičke leve hemisfere koja se takmiči sa emotivnom desnom hemisferom i to predstavio kroz svoje likove, doktora Džekila i gospodina Hajda.