The types of aphasia include the following: 1) Global aphasia—this is the most severe form of aphasia and is applied to patients who can produce few recognizable words and understand little or ...

While expressive aphasia affects the ability to produce speech, global aphasia is a more severe form of language impairment that affects both speech production and understanding. Global aphasia ...

In his book “The Man who Mistook his Wife for a Hat” the British-American neurologist Oliver Sacks described people with the severest form of global aphasia. Although they are unable to ...