Evidence seems to be lacking though. Do you have any specific source in mind?
There's very good evidence coming out of UC Davis.
they have MRIs, decent experimental evidence, and biochemical explanations.
They have published quite a few papers over the years.
You can start here, https://pmc.ncbi.nlm.nih.gov/articles/PMC9267994/
https://pmc.ncbi.nlm.nih.gov/articles/PMC5183725/
Look up Keith Baar.
alt Hacker News
There's very good evidence coming out of UC Davis.
they have MRIs, decent experimental evidence, and biochemical explanations.
They have published quite a few papers over the years.
You can start here, https://pmc.ncbi.nlm.nih.gov/articles/PMC9267994/
https://pmc.ncbi.nlm.nih.gov/articles/PMC5183725/
Look up Keith Baar.