Tuesday, November 01, 2005

Is she lying? Look into her stomach

Changes in gastric physiology are a better indicator than standard polygraph methods in distinguishing between lying and telling the truth, a study released by the University of Texas suggests.

Polygraphs use electrocardiograms (ECGs) to measure changes in heart rate and sweating to detect lies. But researchers say the stomach and gastrointestinal tract are also extremely sensitive to stress, and this mind-stomach connection may betray even the best liars.

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