Interesting. So I do get the over-shadow effect for about 1.5 seconds but I get that from any bright light that transitions to a grey background mostly from taking high dose benfotiamine, along with lutein and astaxanthin and chelated copper as my nervous system was being depleted of thiamine due to a dumb self induced issue that I have nearly resolved. Maybe I am not a good test subject for that reason. Or perhaps my monitor is too bright.
Edit: I reduced the brightness, contrast and changed the black mode of the monitor and went through several cycles. I still get the over-shadow effect for anywhere from 1.5 to 2 seconds but no other effects. Perhaps my supplements are interfering or confounding. I guess it may be useful to note what supplements the test subject is consuming along with dosage to determine if that is a confounding factor.
Edit: I reduced the brightness, contrast and changed the black mode of the monitor and went through several cycles. I still get the over-shadow effect for anywhere from 1.5 to 2 seconds but no other effects. Perhaps my supplements are interfering or confounding. I guess it may be useful to note what supplements the test subject is consuming along with dosage to determine if that is a confounding factor.