The brain contains 86 billion neurons.
Unlock their secrets with a gift that advances discovery.
Scroll to explore the brain. Select a wonder to learn more.
Sleep
During deep sleep, your brain cells actually shrink slightly. This creates extra space for cerebrospinal fluid to wash away toxins that accumulate during waking hours.
Perception
In blind readers, the brain’s visual centre doesn’t go quiet, it learns to “see” through touch, lighting up as fingers read braille.
Movement
The brain has no pain receptors. That’s why neurosurgeons can perform “awake” brain surgeries while patients play instruments or talk, using that real-time feedback to navigate around critical pathways.
Sense of direction
Your brain’s GPS is remarkably adaptable. The hippocampus grows in physical size when you actively memorize complex maps and new routes over time.
Social Connection
Empathy is physical. Holding hands with a loved one can synchronize your brain waves and measurably reduce the way your brain processes physical pain.
Emotions
Your amygdala works like an early-warning system, scanning for danger and helping trigger your fight-or-flight response.
Memory & cognition
Your brain generates about 12 to 25 watts of electricity whenever you process memories and think. That’s enough power to light up a small LED bulb.
Brain and body connection
The vagus nerve acts as a biological superhighway between your brain and your internal organs. Slowing your breathing can directly stimulate this nerve to instantly lower your heart rate.
Speech and language
Producing just a single spoken word requires the precise, lightning-fast coordination of over 100 different muscles across your face, throat and chest.