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.

Anomic aphasia is a language disorder that involves difficulty finding or recalling the word a person wants to use. A person’s language comprehension, grammar, and fluency tend to remain intact.