Guest post by Kayt Sukel
In the beloved children’s book, Happy Birthday to You!, Dr. Seuss writes, “Today you are YOU, that is TRUER than true. There is NO ONE alive who is YOUER than YOU.” Those who study the brain understand that the complex interplay of genetics and environment give rise to that “you-ness” of which Dr. Seuss spoke. And, as it turns out, it also makes for unique changes to brain anatomy—so much so that one can be uniquely identified by the brain, much like with fingerprints or the eye’s iris pattern.
Lutz Jäncke, a neuropsychologist at Switzerland’s University of Zurich, has spent his career studying individual differences. His work looking at brain differences in musicians, dancers, and chess players demonstrated that the human brain is profoundly shaped by experience.
“Thirty years ago, we didn’t anticipate that the human brain is so plastic,” he explains. “In learning that training and experience can have such a profound influence on the human brain, even in terms of anatomical and morphological aspects, we wondered if it was possible to identify individuals on the basis of anatomical features in the brain.”