The various lobes of the brain all have slightly different functions and control different aspects of our lives. It’s good for the ICU provider to have a basic understanding of what is controlled where because it informs how any kind of brain injury will impact the patient. Whether it is acute ischemic stroke, intracerebral hemorrhage, or traumatic brain injury, damage to specific areas of the brain will result in somewhat predictable deficits. Maybe not predicting the degree of impact, but you can be aware of the possible types of problems your patient is likely to experience long-term.
This illustration from the Instagram account, @medical_guidelines, nicely summarizes what the various lobes of the brain control, and thus, what functions may be affected by an injury depending on location.