Looking for a movie name

Hi folks, I'm obsessed trying to find a certain science ficction movie. I think is from the 90's, but could be from late 80's. I don't remember much. It`s about a scientist who's making some kind research about other dimensions. I remember only two movie sequences about 3/4 of the movie.

1- Scientist behavior starts to change into more perverse and there's a scene where there's a half naked tied woman in close-up and behind her is the scientist whipping her hard, telling to someone how his consciousness has changed (maybe he was filming this session.)

2-The other scene is when his research is trascending the conciusness and is affecting his body, then you can see his faced absolutely deformed, then he drags his fingers over the face and the face seems to meltdown and you can see the trace of his fingers over his face while his talking.

I was sure was "Altered States", then "The Lawnmower Man", but they're not. AlthoughIt's a movie of that style.

I hope you can help me.

             Thanks in advance.