Final answer:
James Joyce applied stream-of-consciousness to his novels, particularly in his work Ulysses.
Step-by-step explanation:
The Russian novelist who applied stream-of-consciousness to his novels when required was James Joyce. Joyce's novel Ulysses is a prime example of stream-of-consciousness writing, as it delves into the protagonist's inner thoughts, emotions, and experiences in a seamless manner. In this novel, the plot takes a backseat to the exploration of the character's consciousness.