The movie is based on Mary Shelley’s novel Frankenstein, which had 3 different p.o.v.s
The method of animating the creature is never discussed in Mary Shelley’s novel. In the book Dr. Frankenstein, narrating, refuses to divulge how he did it so no one can re-create his actions. However, the use of lighting to resurrect the monster has become the accepted methodology and appears in virtually every Frankenstein movie since.
The movie was to have included a line of dialogue giving the monster the name, Adam. It was cut when the audiences began referring to the monster by the name Frankenstein.
The Monster in this film does not physically resemble Mary Shelley’s character. It was make-up artist Jack P. Pierce who came up with innovations such as the monster’s flat head, the bolts through the neck, the droopy eyelids, and the poorly-fitted suit. Any future Frankenstein film that features any of these physical abnormalities is taking its inspiration from Pierce’s make-up work.
What are commonly considered to be bolts on the neck of the monster are in reality electrodes, although that they are commonly thought of as bolts is excusable, after all, that is what they look like.