No need to create environment when the neurons can be stimulated directly. This scene from Pacific Rim Uprising movie freaked me out.

Dr. Newt (Charlie Day) heads home after a tough day at the office to his wife 'Alice'. Turns out, 'Alice' just happens to be a massive Kaiju brain in a tank. [0]

[0] https://www.youtube.com/watch?v=mIDTUYSIkcs