- #1
Lisa!
Gold Member
- 649
- 98
http://www.livescience.com/041129_lie_detection.html
Last edited by a moderator:
I don't know. The only thing I know is, I usually don't need a lie detector to know whether someone's lying or not. I just look at people's eyes and well it's clear. Of course I should say fortunately people around me aren't professional liars like politicians or criminals! :tongue:TheStatutoryApe said:That's interesting. Hasn't it been shown scientifically though that people are capable of controling their brain activity when meditating? And what about people who truly believe what they are saying even if they are lying? I don't think that this device would help with that would it?
Lisa! said:I don't know. The only thing I know is, I usually don't need a lie detector to know whether someone's lying or not. I just look at people's eyes and well it's clear. Of course I should say fortunately people around me aren't professional liars like politicians or criminals! :tongue:
I don't know about meditation, though I'd expect even that would show up as a characteristic pattern of activity if it were studied (I don't know if it has or hasn't...just a guess here), and while it might not show if someone was being truthful, if you could tell they were doing something that altered their brain activity patterns, you could at least count the results as inconclusive.TheStatutoryApe said:That's interesting. Hasn't it been shown scientifically though that people are capable of controling their brain activity when meditating? And what about people who truly believe what they are saying even if they are lying? I don't think that this device would help with that would it?
Brain scans are used as lie detectors in order to measure and analyze the activity and responses in specific areas of the brain. This can help determine if someone is being truthful or deceptive in their statements.
Studies have shown that brain scans can have an accuracy rate of up to 90% in detecting lies. However, the accuracy can vary depending on the individual being scanned and the specific techniques used.
Functional Magnetic Resonance Imaging (fMRI) and Electroencephalography (EEG) are the most commonly used brain scans for lie detection purposes. These scans can measure brain activity and responses in real-time.
While brain scans can be effective in detecting lies, there are limitations to their use. Factors such as individual differences in brain activity and the potential for manipulation of brain responses can impact the accuracy of the results.
Brain scans as lie detectors can potentially be used in various settings, such as criminal investigations and legal proceedings, to help determine the truthfulness of statements and gather evidence. However, their use must be carefully considered and ethical guidelines must be followed.