What are permanent memories when there are diseases like Alzheimer's and dementia that prevent humans from remembering the majority of things. The main regions of the brain considered permanent are the human capacity for action, perception and situation analysis. Things that help people in everyday scenarios and decision making (LeDoux, 2007). If a person realizes that they have the ability to make a safe choice based on what is considered common sense, the permanent memory part of the brain knows this from the start.