What Happens To Your Pupils When You’re Excited?

Did You Know!

Your Spine Has a Built-In “Brain”

• Deep inside the spinal cord is a network called the central pattern generator (CPG) — a group of neurons capable of controlling rhythmic movements like walking, even without input from the brain.
• Explanation: In some spinal cord injury studies, people could still produce stepping motions thanks to these spinal circuits, showing the spine has a level of autonomous motor control.