Can anyone tell me a movie I am not sure actually the release date of it but I think it's quite an old movie. It's about a dream control. I remember they had seminar/courses about the dream control and the lady she had a live dream machine (like from a human flesh) she connects that to people so they can enter a different realities. In the end, he killed that dream machine.

This machine is like from flesh and alive.

Would be grateful for help! Thanks!