Hundreds of Trillions...

No this post is not about the US Debt… researchers at Stanford have used advanced imaging technology to visualize neural connections in the brain. It turns out that a single neuron the cerebral cortex can make thousands (possibly tens of thousands) synaptic connections. 

Since the human brain contains around 200 billion neurons, that means the number of connections in the human brain is in the hundreds of trillions of connections. 

Image Credit: "Neurons in the Brain".  2003 Dr Jonathan Clarke. Rebecca-Lee Flikr.