Frequently saying "um," pausing to find words, or losing your train of thought may reveal more about brain function than ...

Aphasia occurs when a brain disorder affects a person’s language abilities, such as speaking, reading, and writing. The type of aphasia a person has depends on where damage occurs in the brain.

Apraxia of speech is a motor speech disorder that can make speaking difficult. It affects the brain pathways involved in speech and can cause problems with coordinating the movements necessary for ...