Aphasia

Involves the temproal lobe, wernickes area or regions of the partial lobe
word output and speech production are functional
Prosody is acceptable, but empty speech/jargon
speech lacks any substance, use of paraphasias
use of neolgisms (substistution within a word that is so severe it makes the word unrecognizable)

Frequently the frontal lobe (anterior speech center) of the dominant hemisphere

poor word output and dysprosodic speech (impairment of the rhythm and inflection of speech)

poor articulation and increased effort for speech
content is present but impaired syntactical words

Fluent Aphasia
lesion of posterior region of superior temporal lobe
comprehension impaired
good articulation, use of paraphasias
impaired writing
poor naming ability
motor impairment not typical

Fluent Aphasia
lesion of supramarginal gyrus, arcuate fasciculus
severe impairment with repetition
intact fluency, good comprehension
speech interrupted by word-finding difficulties
reading intact, writing impaired

Non-fluent aphasia
3rd convolution of frontal lobe
"expressive aphasia"
most common form of aphsia
intact auditory and reading comprehension
impaired repetition and naming skills
frustration with language skill errors
paraphasias are common
motor impairment typical due to proximity of Broca's area to the motor cortex

Lesion of frontal temproal and parietal lobes
comprehension is severely impaired
impaired naming, writing and repetition skillls
may involuntarily verbalize without correct context
may use nonverbal skills for communication

Non-dysarthic and non-aphasic impairment of prosody and articulation of speech. verbal expression is impaired sceconday to deficits in motor planning. A patietn is unable to initiate learned movement even though they understand the task. lesions are usally found in the left rontal lobe adjacent to Broca's area.

Motor disorder of speech that is caused by an upper motor neuron lesion that affects the muscles that are used to articulate words and sounds. speech is often slurred.