Sidney Peck thanks. For my neuroscience PhD thesis, I wanted to test them versus brainwaves. Of course, I did check at least one part of time perception, i.e., response time. But the other aspects of time perception were canceled due to Covid. I hope I can conduct research on them; the idea and proposals are ready; just need some interested student to do the work. If you were interested or had any interested students, let me know. :)