Would I Lie To You Yet Again?

The Deception Blog alerts our attention to yet another breathless and swooning report on reading the fMRI tea leaves of lie detection in their post, More fMRI stuff and nonsense. The ABC report says virtually nothing specific about what purportedly happens in the brain of someone lying compared to telling the truth, only:

The FMRI results visibly showed more blood rushing to the specific parts of the brain when I was lying.

"We're looking beyond just the anxiety, what you're doing cognitively when telling a lie. When you're telling a lie, you're overriding a normal response of telling the truth, " said George. "So your brain is putting on a brake and overlearning a response. It's harder to tell a lie then tell the truth, [to] remember what you're lying about. You've created a false way the world is. So we're looking at overworking, inhibiting, multitasking. Those areas are pretty predictive in catching someone when you're lying."

That, and the lovely figure below. Notice the only activity in the truth-telling brain on the left seems to located mostly outside the cerebral cortex. Great.

Who needs Pinocchio's nose to find a lie? The FMRI scan on the right detects a brain processing a false statement; the less colorful brain on the left corresponds to someone in the middle of a truthful statement. (ABC)