Read this piece on brain by them Brain, Brain Information, Facts, News, Photos -- National Geographic. Lovely interactive pictures.
While looking at the pictures, remember that it is our father's left fronto-parieto-temporal lobe which is affected. So was his ganglio-capsular region, but this cannot be seen in the picture.
Excerpt from the piece -
"Making sense of the brain's mind-boggling complexity isn't easy. What we do know is that it's the organ that makes us human, giving people the capacity for art, language, moral judgments, and rational thought. It's also responsible for each individual's personality, memories, movements, and how we sense the world.
All this comes from a jellylike mass of fat and protein weighing about 3 pounds (1.4 kilograms). It is, nevertheless, one of the body's biggest organs, consisting of some 100 billion nerve cells that not only put together thoughts and h…