Lie Detectors (fMRI) - Link to infographic

  1. What background info does the audience need in order to understand what’s going on? fMRI brain scanning can be used to do a lie detector test. This is much more efficient than the original polygraph test which dealt which heart palpitations and other signs of nervousness in the brain. You can stay calm and lie but your brain will still reveal if you are lying. Furthermore this science isn’t perfected yet and it still needs work.

  2. What is one viewpoint? What are some arguments/statements/facts that support this view? Some people argue that lie detectors take out the middleman in court cases. Lawyers in a court case can manipulate the case and make it so that a person who is guilty actually walks free and vice versa. However with lie detectors we don’t face this issue because you can’t lie to a lie detector which works through fMRI.

  3. What is another viewpoint? What are some arguments/statements/facts that support this view? Other people will argue that lie detectors can’t tell you the entire story and that evidence and court cases are the best way to reach a logical conclusion in the courtroom because it analyzes all sides of the story.

  4. What are some real-life examples/case studies on this topic? fMRI lie detectors haven’t been allowed in court yet but there are many studies which have been performed showing that we can in fact see if someone is lying by doing an fMRI scan on their brain to measure a change in brain activity.

  5. What are some thought questions and/or deep final thoughts that you can use to conclude your presentation, and leave your audience wanting to learn more? fMRI’s are not a perfect science. We shouldn’t treat fMRI’s as the be all end all in court, we should seen more like another piece of evidence we weigh in the courtroom.