Yes, I have seen Tyler Henry before on TV and videos and believe he is likely a genuine medium as many others that have undergone scientific investigation.I'm not sure whether you've ever heard of the psychic medium, Tyler Henry. I'm mentioning him because he underwent a brain scan done before a reading and while he was giving a reading during the season 4 finale of his television show, Hollywood Medium with Tyler Henry. I won't reveal the results of his scan, but I'm including the following videos to give you an idea of what transpires in the episode. I recommend watching it, and it's available on Amazon Prime and Google Play (and see here). I recommend watching additional episodes as well as his other show, Life After Death with Tyler Henry, on Netflix.
A brain scan would be interesting if it showed him using different areas of the brain than a person doing a cold reading from physical clues (as skeptics maintain that is how mediums work) would use. I saw a brain scan of medium Teresa Caputo on a show that suggested a different area of the brain was indeed in use during a reading.