If there is damage to this area it can cause a complete change in someone’s personality. For example, if someone is a very happy and friendly person, they could now be angry and agitated around people. How they express their emotions could be completely different than before the accident. Along with expressing emotions, they might not be able to interpret emotions of others due to damage resulting in different social behaviours. How they interpret how someone is acting could be different than what they are actually meaning. This is not the case with everyone who has a traumatic brain injury, but there is a potential it could happen.
Motor function can be affected with certain fine motor skills in the hands. It can also affect the motor function of speech, also known as Broca’s Aphasia. This is when there is a problem with the transmission of information. They understand what the information is and know what they want to say, but have a difficult time actually getting the information across