This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American
Late last month the prominent neuroscientist Marian C. Diamond passed away at age 90. She is known for her study of how certain types of experiences can induce structural and chemical changes in the brain.
Like many of the most important scientists of the last century, Diamond’s publications included an article for Scientific American. Co-authored with her colleagues Mark R. Rosenzweig and Edward L. Bennett, the story “Brain Changes in Response to Experience” was featured on the cover of the February 1972 issue.
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In their experiments, Diamond and company placed rats in different sorts of environments ranging from solitary and boring to crowded and highly stimulating. Then they looked at how the rats’ brains came to differ from one experimental group to another. Their findings helped to lay the foundation for what we now know as plasticity in the human brain. As in many Scientific American articles published in the 1970s, a series of drawings by scientific illustrator Bunji Tagawa helped to tell the story. The images below provide an overview of the experimental setup and key results. You can also find the full article in our archive.