Artificial neural network (Artificial brain)

• Our Biological neural networks are made up of real biological neurons that are connected or functionally related in a nervous system. 
• Artificial neural networks are composed of interconnecting artificial neurons (programming constructs that mimic the properties of biological neurons).
•  Artificial neural networks may either be used to gain an understanding of biological neural networks, or for solving artificial intelligence problems without necessarily creating a model of a real biological system.
• Google engineers claim they've designed a computer network capable of analyzing, categorizing and ultimately teaching itself to recognize the content of images. The "neural network" was fed 10 million images from YouTube video thumbnails and -- without being told how -- created its own concept of what a cat is.