A Living Soul
En levande själ (original)
A submerged self wakes up in a laboratory. Gradually we understand that it's the subjective experience of Ypsilon, a human brain being kept alive artificially.
Watch "A Living Soul" on Amazon released in 2014. It's a comedy and drama movie, and has a rating of 7 out of 10 from Imdb which is usually fine for this kind of movie, and is currently only available for purchase or rent.