Neuroscience research reveals dual brain origins and Alzheimer's triggers

New scientific research is providing significant insights into brain structure and the mechanisms behind neurodegenerative diseases. According to findings published in Nature Neuroscience and reported by Stanford Medicine, the human brain may actually consist of two distinct neural systems that evolved separately and later merged into a single organ.

Researchers discovered that the forebrain and hindbrain develop from different initial cell populations. The forebrain, associated with higher functions like language, consciousness, and abstract thought, develops via cells expressing the Otx2 gene. In contrast, the hindbrain, which regulates vital functions such as breathing, heart rate, and sleep, develops through cells expressing the Gbx2 gene. These two pathways are determined at very early embryonic stages.

In a separate development regarding Alzheimer's disease, scientists have identified the ERBB4 receptor protein as a potential key factor in the disease's progression. Research suggests that the abnormal activation of this protein in excitatory neurons may disrupt the balance between excitatory and inhibitory signals in the brain. This imbalance could trigger the loss of healthy connections and occur even before significant memory loss is evident, potentially offering new avenues for treatment.