Brain Wrinkles

What’s the secret to our species’ smarts?  The answer may be wrinkles.  The surface of the human brain is convoluted by deep fissures, smaller grooves called sulci, and ridges called gyri.  This surface is called the cerebral cortex and is home to about 100 billion neurons, or nerve cells.  The folded, meandering surface allows the brain to pack in more surface area — and thus, more processing power — into the limited confines of the skull.

Interesting wrinkle news from a LiveScience Contributer Stephanie Pappas.