This scene is directed to create a fear feeling. What I feelt watching the video is not really fear but rather suspense. The viewer is waiting for something. We just imagine horrifying things, good horror movies use suggestion to create an anxiety feeling. In fact, every viewer reacts differently to a supposed fear scene. So the best way to horrify a public is to let every person imagines is own terrifying scene.
We can also compare this movie to recent horror films. For instance: SAW 6 or the saga Final Destination. To my mind, I don’t like this movies because we don’t feel fear watching it. A contrario, we laugh because character’s deaths are really uncommun and stupid. A too ridiculous place is given to suspense. We can predict the deaths whereas the aim of this kind of movies is to frighten. An other element: The ketchup effect. In some now films, plastic is used to simule organs like intestines and blood. But it’s so unreal to see somebody cuts strips of flechs or one of his arms staying conscious that the end result is not convicing ant quite laughable.
I didn’t see the whole movie but I think it’s closer to Psycho. Even if it is an old movie, Alfred Hitchcock needn’t technology to be – and stay – the master of suspense. We needn’t to see anatomy details to be afraid.