Interesting. Before you rush to your dealer, note that this is n=1, self-administered (albeit with self-blinding of their scores over several months), and quite a cocktail:
> The subject of this case study self-administered the Ishihara test prior to taking a large 5 g dose of psilocybin-containing mushrooms.
> Additionally, the participant in the current case study took an unusually broad range of psychoactive substances – including weekly cannabis, an LSD microdose and a blast of nasal esketamine – that may complicate interpretations of his score.
I did a carnivore diet 2 years ago that I swore changed my perception of colors and had an increased ability to differentiate between red/green. I wrote it off as maybe just me being overly enthusiastic about the benefits of the diet and just a placebo effect but seeing this headline now makes me wonder if maybe there is a 'software' component related to colorblindness and not just hardware..?
Synthesia is a commonly reported property of some psychedelics. Now, with Bear, he was an audio engineer and probably had a pretty good understanding of resonance. If you look at the bass speakers behind Mike Gordon of Phish (there are lots of high quality live videos taken recently) you can see that when he plays low notes, the metal grill on the speakers vibrates visibly. You can also see that even when damped, any video camera clamped to the music stage is vibrating from drum impacts.
I could easly see Bear, on Bear acid, at a Dead show, thinking "I can see sound waves" by watching something resonate in time to the music. I'm not sure but maybe some folks have seen actual notes flying out of a guitar, but that would be a very strong hallucination.
