For someone who has no medical qualifications, it's hard to say. From what I've learned in school, our lobes are the most complex and developed part of our brains in comparison to other animals. Pretty much the entire outer layer of the human brain that's above and surrounding our brain stem and hippocampus is quite complex since it handles most of our advanced skills. Basic skills would be like feeling hungry, feeling pain, and all that. But advanced skills would involve personality, learning, and stuff like that. Other animals have them too, but they are smaller in relative to their body size.
If you really want to know for sure, talk to your doctor. This is a type of question that you need to discuss with them before you give the thumbs up for this surgery. They may not have all the answers, but I can tell you for sure that they will probably have more satisfying ones than the kinds that I or anyone on this site (who doesn't have the credentials) can give you. You can also consult a physical therapist in terms of your worry about motor skills and a neurologist to ask about a more detailed explanation about what the parts of your brain does and how this surgery may affect it.