The microscopic structure of the human brain is almost incomprehensibly complicated, composed of trillions of interconnections between tens of billions of neurons. Understanding this circuitry, the aim of modern neuroscience, is a laudable goal for fundamental as well as neurological health care reasons.

Patients who experience symptoms described as transient neurological attacks, such as temporary amnesia or confusion, may have a higher risk for stroke and dementia, according to a study in the December 26 issue of JAMA.