Textbooks may have misdrawn this basic brain structure for 100 years

Scientists discovered that brain-cell axons may not be smooth tubes as textbooks have shown for more than a century, but instead naturally resemble strings of tiny pearls. Those pearl-like structures can change with neural activity and may help control how quickly electrical signals travel through the brain.

from Top Health News -- ScienceDaily https://ift.tt/gYHqQOD