3 facts
Individuals who lost their sight later in life still experience visual dreams, often incorporating memories of what they once saw. Those born blind typically have dreams involving sound, smell, touch, and emotion, creating rich non-visual experiences.
These involuntary movements, called microsaccades, tremors, and drifts, are essential for preventing your vision from fading. Without them, your brain would adapt to a static image and stop perceiving it, highlighting dynamic visual processing.
Despite making up only about 2% of your body weight, the brain consumes around 20% of the body's total oxygen and calories. It's an incredibly energy-intensive organ, constantly active even during sleep, managing countless functions.