That IS interesting.
Conceptually I can understand the sense in that, not sure what the science says.
Indeed
Coleridge wrote Xanadu while on heroin
He said it shut down his critical brain and allowed his free creative thought to take over
In Xanadu did Kubla Khan
A stately pleasure-dome decree:
Where Alph, the sacred river, ran
Through caverns measureless to man
...
Five miles meandering with a mazy motion
Through wood and dale the sacred river ran,
Then reached the caverns measureless to man,
...
It was a miracle of rare device,
A sunny pleasure-dome with caves of ice!
...
I would build that dome in air,
That sunny dome! those caves of ice!
And all who heard should see them there,
And all should cry, Beware! Beware!
His flashing eyes, his floating hair!
Weave a circle round him thrice,
And close your eyes with holy dread
For he on honey-dew hath fed,
And drunk the milk of Paradise. (heroin?)