Karachi (Rafiq Mangat) Scientists have challenged the centuries-old concept of the human brain and revealed that the brain actually consists of not one but two separate organs, which were formed in different ways over millions of years of evolutionary history. This new research not only opens up new ways of understanding brain diseases, but also for the first time has succeeded in growing specific brain cells in the laboratory. According to details, a new study, led by Stanford Medicine, has revealed that the human brain actually consists of two separate organs that are connected to each other, and this discovery may help in the study of devastating neurological diseases, especially those that affect the lower part of the brain (brainstem). For centuries, scientists have considered the brain as a single and unified organ.