- Lateralization of the brain is when certain functions or cognitive responses are coming or happening in specifically one side of the brain. The right and left hemisphere of the brain has two different functions. This project probably originated and was more active in our right hemisphere which is responsible for art and being more creative amongst other things. The right side of the brain is heavily associated with negative feelings while the left is associated with more positive feelings. Lateralization is interesting to me because you never really think of something happening in a specific part of your brain. Say you’re good at math, you'd think your whole brain is working together to come up with an answer and to retain the information when really its the left hemisphere of your brain putting the work. As mentioned before, the positive feelings the left side is responsible for would mainly be happy, excited, surprised, calm. The hemispheres are like those totally opposite best friends that you never know how they end up working together but they just do. One is always more optimistic(in the case it would be the left hemisphere) and one is more emo or pessimistic(the right side of the brain).