Cyberspace in Neuromancer is certainly not not psychedelic, but it’s also clearly to a large extent based on Tron .
He has sometimes talked about Blade Runner and worrying when it came out that people would think his stuff was derivative of it (it wasn't), and then said he eventually got to talk with Ridley Scott about it, and it turns out both of them had similar inspirations, namely Metal Hurlant.
I think the article I got his take on Blade Runner from was the Paris Review [1] which is archived here [2]
[1] https://www.theparisreview.org/interviews/6089/the-art-of-fi...
"Tron nostalgia: When I was writing Neuromancer, that was the bleeding-edge digital aesthetic. Those sparse green lines! Pong, meet Case."