Void And Null

Okay starting with the good points. The vision itself is great I especially like the face. The probe in his cheek is truly a nice touch. The hair is done extremely well giving a good feeling of perspective. The blind slightly swollen eyes are also done quite well.

Now for the little gripes I have.

Wathaniel is clearly submerged in liquid so assuming he needs to breathe, any even most basic breathing device would be a nice and needed little detail. (Of course he might not need air, which is possible and would make my point irrelevant. However I don't know that and it's not stated anywhere here.)
Also the electrical surges. In itself it's a nice well done detail. However I fail to see its relevance in the context of this work. Of course I do understand you wanting to go with the pop-culture Hollywood made trend of having power surges coursing through liquid to create artificial extra pain on the subject. However if you look at the situation more realistically, power surges are the last thing any half decent scientist would allow. Not only do they add in a factor of risk of messing up the subject, but they also mess up the readings of the equipment. Assuming advanced technology the electronics used would be fragile and any additional voltage sent back to any of the monitoring machines would be likely to cause it to either malfunction or go straight up in flames. Not good regardless of circumstances. Not to mention outside voltage sent to the brain, as clearly shown on the work, would most likely either kill or cause mental impairment.

On a technical level The perspective on his left arm is off to the point where I'm no longer sure if the probes are on his back or arm. Other than that It's a really good piece of art and a treat to my eyes. However it's not really groundbreaking or moving enough to leave an impression on me so I unfortunately have to rate impact quite low.
Sadly same goes for originality. The concept of a test subject kept in a vat has been done to death. Sadly it suffers from the same mistakes most art based on that concept does, which I have pointed out above. This really harms the originality of this piece making it just one of a crowd.