Tel Aviv University (TAU) researchers have found that the movement of facial muscles can act as an indicator for when one lies. They reported that a 73% accuracy of its electrode-containing stickers when used for lie detection.
The stickers with electrodes are printed on soft surfaces to monitor and measure the muscle and nerve activities of trial participants. The trial studies two groups to identify deception in real life: those who contract their eyebrows when they lie or those who move their cheek muscles.
“Studies have shown that It is almost impossible for us to tell when someone is lying to us," said Tel Aviv University’s Dino Levy, who, with Prof. Yael Hanein, developed a method to measure the movement of facial muscles in order to detect lies. https://t.co/PUZ4vX9MGU
— Algemeiner (@Algemeiner) November 17, 2021
Electrode technology for lie detection
X-trodes has already commercialized the technology with many applications like early neurological disease diagnosis and sleep monitoring at home. Meanwhile, the TAU researchers are studying the technology’s effectiveness in lie detection. Professor Dino Levy notes the basis of their research on the assumption about facial muscle contortion when lying. Levy adds that there is an absence of electrodes that can measure the contortions.
Researchers attribute a person’s ability to lie through their varying facial muscles with this state-of-the-art innovation. They believe that in the future, the use of electrodes will become redundant with the advancement of video software that can determine when an individual is lying with facial detection based on its muscle movement. Levy predicts that high-resolution cameras will soon be able to determine truthful statements from lies based on a person’s facial muscle movements.
We made it to the Times https://t.co/CBQnxIuwLP
— Yael Hanein (@hanein) November 22, 2021
With a 73% average accuracy, researchers found that participants tend to lie over time based on their muscle group switching. They note the correlation of participants’ performance, which suggests their reliance on shared features.
The results from the study demonstrated the feasibility of wearable electrode arrays’ use in lie detection among humans. According to the researchers, this will be pivotal for future research on individual differences in deception using expressions. While the current research is still using electrodes, advancements in technology may also do away with that in favor of cameras that can detect lies via facial movements.