[NorthMountain]

"However, when the volunteers took LSD, many additional brain areas -- not just the visual cortex -- contributed to visual processing."

That certainly explains the phenomenon of smelling and tasting the colors, seeing sounds, etc.

[shibumi]

"That certainly explains the phenomenon of smelling and tasting the colors, seeing sounds, etc."

As a synesthete that is something that I experience with a good deal of regularity.

There are many of us that do this without the drug.

[Psalm 73]

"...explains the phenomenon of smelling and tasting the colors, seeing sounds, etc."

That was one of the more baffling things to try to explain to somebody.
That, and the patterns.

Amazing I lived through that, or more correctly, God kept me safe despite myself. Amazing Grace....