Besides intuition or visually observing a person’s behavior, the most common method of lie detection is the polygraph. It’s been around since the early 1900s and measures things like your heart rate, respiration, perspiration and overall anxiety to determine if you're telling the truth.
But some scientists aren’t satisfied with that.
In this Just Explain It, we’ll look at how a new way of measuring brain activity may help researchers actually see when a person is lying.
It’s called functional magnetic resonance imaging, or fMRI. I know, that's a mouthful, but one company, No Lie MRI, believes the technology can expose a lie using scans of the brain’s activity. Here’s the theory. When someone tells a lie, their brain hasRead More »from Just Explain It: Your Brain On Lying