Hi Paul,
Thanks for reviving this thread. Clearly I got lost over Christmas and I didn't get round to replying. Your questions are excellent ones and I am sure that the good Austrian Doctors will check these out in due course. Both questions bring up some interesting "observations". I assume that it is the intensity and stroboscopic effect of the light that brings about the changes in perception. I guess a similar question could be asked in regard to Hemi-Synch in that a hearing impaired person would similarly not have the same changes as a person who had perfect hearing.
Similarly with the shared experiences. I know that it has been reported that DMT can sometimes generate shared perceptions as, indeed can Hemi-Synch. I know that some of Dr. Rick Strassman's subjects reported shared experiences and similarly in his My Big Toe Trilogy Tom Campbell describes similar experiences. For me this is evidence that we really do go to "another place" during these experiences. Indeed the only difference between dream states and conensual "reality" is that the latter is exactly that, consensual. If a dream state was also shown to be consensual then who is to say which reality is "real" and which one an hallucination?
Tony