Identical twins do not share the same brain anatomy

Identical twins do not share the same brain anatomy

Two individuals, including twins sharing the same brain anatomy, found a new study using magnetic resonance imaging (MRI) on fingerprints for personal identification. According to the researchers, this is due to a combination of genetic factors and individual life experiences.


Through a combination of genetic factors and individual life experiences, the use of magnetic resonance images of fingerprints finds a study, not a person, including twins, who share the same brain anatomy suggesting a personal identification. Because fingerprints are unique to every individual, the standard is in our heads, said Lutz Jancke, a professor at the University of Zurich. “The combination of genetic and non-genetic influences not only affects brain function but also its anatomy,” said Jancke.


Professional musicians, golfers or chess players, for example, have special characteristics in the areas of the brain that they use most for their specialized work. However, shorter events also leave traces in the brain: for example, if the right arm remains immobile for two weeks, the thickness of the cerebral cortex in responsible areas of control of the immobilized arm is reduced.


“We suspect that these experiences interact with the brain interacting with the genome, so over the years, each person develops a very individualized anatomy of the brain,” says Jancke. To test the hypothesis, the team examined the brains of nearly 200 healthy older people three times within two years using magnetic resonance imaging. More than 450 anatomical features of the brain were evaluated, including very general, such as the total volume of the brain, the cortical thickness and the volume of gray and white matter.


The researchers were able to identify an individual combination of specific anatomical brain features for each so that the detection accuracy was over 90% even for very general anatomical brain features.


“With our study, we were able to confirm that the structure of the human brain is very individual.” “It was 30 years ago, we believed that the human brain had little or no individual characteristics,” said Jancke, “personal identification through the anatomical features of the brain was unimaginable.” The personal identification of brain anatomical features was unimaginable.


However, replacement of fingerprint sensors by magnetic resonance imaging in the future is unlikely because MRI is too expensive and time consuming compared to the proven and easy to fingerprint, he showed.

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