I’ve never understood how they make people see things. Same thing with ayahuasca. Obviously, there’s some sort of chemical reaction within our brain like with any drug, but what about these makes us see things that aren’t there? Also, how does our brain create so many realistic images in front of us without them being real?
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Everything you “see” is a result of biochemical or electrical signals from your sensory organs (eyes, ears, nose, mouth/tongue, skin, etc.) to your brain; your brain just interprets those signals. If you had a complete enough understanding of how that signaling worked, you could conceivably create a “false” image/sound/taste/feeling, because your brain just sees the signals corresponding to that image/sound/taste/feeling and interprets that as being real.
Ayahuesca, mushrooms, LSD, and other hallucinogens have a similar effect. By messing with the sensory signals of the brain, they cause your brain to see/smell/hear/feel things that aren’t physically present.
Imagine if you lived in a sealed box and everything you knew about the world came via email from a few different “trusted” sources. If someone where to hack those email accounts or otherwise insert fake information in those emails, you might get a skewed sense of what was actually happening outside.
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