At roughly the same time as environmental soul-searching emerged, there began an era of intense clinical studies of the brain, especially the role of the left and right cortical hemispheres. One book that popularized this research was art teacher Betty Edwards' Drawing on the right side of the Brain. Edwards' view was that one could improve one's drawing skill by stimulating the right side. Medical research held that rational function, language, calculation, logic and sequence were based in the left side of the brain while feelings, intuition and spatial processing took place on the right. In addition, receiving and analyzing information from the outside world is the job of the right hemisphere. The experiments included work by Nobel laureate Sperry, LeDoux, Gazzaniga, and many more.