I thing I've been through that a few times. interesting experience.
A few times with eye surgery where I could hear and understand all the conversation of the doctors and staff, yet just a glow in the eye they were working on. I kept telling myself that I hope that I wouldn't blink or roll my eye, yet thinking I was probably unable to do so if I tried. One operation took a few hours and the surgeon was instructing another doctor on how to do it. The conversation was enlightening and interesting.
Also a half dozen colonoscopies where I went in and out of awareness during the procedure. A few time was able to see the TV screen and what they were doing. Also once for an angiogram and another time a septoplasty procedure.
Thanks for asking ... gave me an opportunity to count them off. Hope I didn't miss any :)
