GLASGOW — Doctors may be a step closer to peering deep into your brain to spot strokes or tumors without expensive MRI machines or invasive procedures. That’s because researchers at the University of ...

They directed a pulsed laser beam at one side of a volunteer's head and placed a detector on the opposite side. The setup was designed to block out all other light and maximize the chances of catching ...

For decades, scientists have used near-infrared light to study the brain in a noninvasive way. This optical technique, known as "fNIRS" (short for "functional near-infrared spectroscopy"), measures ...