Neuroscience research reveals dual origins and developmental stages of the human brain

New scientific research has revealed fundamental insights into the biological structure and developmental stages of the human brain. Researchers at Stanford University discovered that the brain is not a single organ but rather consists of two distinct systems that evolved independently before merging. During the gastrulation stage of embryonic development, two separate groups of cells emerge: one programmed exclusively to form the forebrain, responsible for high-level functions like logic and language, and another dedicated to the hindbrain, which manages autonomic survival functions such as breathing and heart rate.

Complementary research conducted as part of the PsychAD project, involving the analysis of over 1.3 million brain cells, has mapped the major stages of brain change throughout a human lifespan. The study found that while the brain undergoes rapid reorganization during childhood and adolescence, these changes slow significantly around age 24, leading to a period of relative stability in the prefrontal cortex until approximately age 60. After age 60, a new phase of change begins, characterized by increased activity in cells responsible for brain protection and the management of damaged proteins, alongside shifts in the brain's biological clock.