Solution for the mind link brain puzzle in the Necrotic Laboratory from Act 2 in the Mind Flayer colony (below Moonrise Tower).
Act 2 Necrotic Laboratory Mind Link Brain Puzzle Solution
Once you have gotten below Moonrise Tower and into the Mind Flayer colony, if you travel to the southern-most part of the map, you will come upon the Necrotic Laboratory. To the south-east of the Lab will be a platform you can jump down on that has a console you can use. When you click the console, it will bring up the mind link puzzle. You will have to connect the parts of the brain starting at the console to their matching images at the other end. However, you cannot use the same nodes more than once.
The parts of the brain are: Reason (purple), Memory (green), Emotion (yellow), and Speech (blue).
Reason will follow a path at the top of the puzzle, Emotion will follow a path somewhat towards the bottom of the puzzle, while Memory and Speech will cross paths about halfway across the puzzle.
