it enters my mind-brain

A more simple and at the same time more emphatic way of saying "I get it" or "I understand". Usually improved by saying "I get it" first. When face to face (instead of in a texting situation) probably best supplemented by pointing each index finger to a respective side on the forehead.
Sure to convince anyone that you've understood something and that you're frighteningly smart.

I get it, it enters my mind-brain.

Don't question me twice, I get it, it enters my mind-brain. Because I'm smart.