knowledge

If it doesn't occupy a place in your brain, then how come poeple lose very specific peices of information when they take an injury to the brain? For example, I have known people who after a stroke knew everything they had known before, except information about a specific thing. Say, computers, or mowing the lawn. It could be anything. My husband, who has a tumor in his brain, in the area considered to be the "language center", often can't remember the words he is trying to use. It's very frustrating for him. He'll spend several minutes trying to think of a specific word, and it always turns out to be something really simple and commonplace.