Another interesting case is described by Oliver Sacks in The Man Who Mistook His Wife For A Hat. The patient had visual agnosia. He could describe things in great detail, but was unable to name them. One object was, "a unicursal plane infolded on itself with five outpouchings." He did not know it was a glove.

It raises another interesting question about language and brain dynamics. How is it the man could describe the object but not give it its proper name, but could give it its proper description? Is there a different part of the brain for nominal and descriptive language production?