As fate would have it, as a clincal hypnotist I was roped into doing work with people who claimed alien abduction and close encounters.
I did so reluctantly but refused enumeration for ethical reasons.

There were no brain scans to determine if any of these people had temporal lobe epilepsy. Most of the cases were simple sleep paralysis.

After 200 cases I remained unconvinced although some people are more talented actors than others. I think Daryl Hardes still has the films of some of these sessions.

I still have the Dr. Mack book on abductions - the pre published version that has all the actual names unchanged.