The loss of particular functions like the ability to see color, or sense motion are interesting demonstrations of the localization of cortical function. In thi

The loss of particular functions like the ability to see color, or sense motion are interesting demonstrations of the localization of cortical function. In this case, it is possible that visual area MT (V5) is damaged. This area processes motion signals. For people interested in follow up reading the story of Phineas Gage is an interesting illustration of the functions of the frontal lobes, and the book "The man who mistook his wife for a hat" is also very interesting. Also fascinating is Gazzaniga's book "The cognitive sciences" which has chapters relating to very odd sensory/cognitive deficits.