I am a survivor of massive hemorrhagic
stroke in 2005. There is considerable cross-over
in the symptomology between TBI and Stroke.
There are two main types of Aphasia: Receptive and Expressive. Receptive Aphasia is indicated by garbled in-coming messages (verbal, written, vision, tactile) that the victim receives.
Expressive Aphasia affects speech, writing, etc. This is perhaps more well-known, obvious, alarming and dramatic.