Language System Flashcards
In 98% of people, language is lateralized to the
Left hemisphere
In ALL people, language is localized to the
Perisylvian language area
The perisylvian language area is called the
Language core
In neonates, speech preferentially activates the
Left hemisphere
Partial or total loss of the ability to articulate ideas and to comprehend spoken and written language, resulting from damage to the brain
Aphasia
An acquired disorder in which the language system is essentially broken
Aphasia
If a patient can;t understand spoken word but can read as well as before, does the patient have Aphasia?
No. Language system is in tact. The issue lies elsewhere
If a patient can’t articulate through speech, but can write as well as before. Does the patient have aphasia?
No. Language system is in tact. The issue lies elsewhere
Compromised from the onset of a stroke and is the last attribute to recover
The ability to name objects
What are the two types of aphasia where patients have a larger difficulty with output?
Broca’s aphasia, and transcortical motor aphasia
What are the 4 types of aphasia where the patient has a larger difficulty with input?
- ) Wernicke’s aphasia
- ) Transcortical sensory aphasia
- ) Conduction aphasia
- ) Anomic Aphasia
Most aphasics have damage to the area surrounding the
-In dominant hemisphere
Sylvian Fissure
Lesions to the frontal lobe/insula cause
Non-fluent aphasia
Lesions to the temporal/parietal lobe cause?
Fluent aphasia
Most aphasias are due to
Vascular accidents
Which blood vessel perfuses the Perisylvian area?
MCA
The MCA forms major branches. Which areas are supplied by the
- ) Superior branch
- ) Inferior branch
- ) Insula + Frontal Lobe
2. ) Temporal Lobe
We can test the language core by asking a patient to repeat a low frequency statement. If the core is damaged, alternate routes are available, but take to long. This means that the
Ability to repeat is compromised
The area of damage shared by LeBourgne and LeLong is now known as
Broca’s Area
Broca is the person that said that the faculty of articulated language resides in the
Frontal lobes of the brain
The general name for expressive (non-fluent) aphasia
Broca’s Aphasia
Patients with damage just to Broca’s area (called Little Broca’s) have an aphasia for
Less than 12 months
-show near 100% recovery
More extensive frontal lobe damage (Big Broca’s) results in
Life long Broca’s Aphasia
-More limited recovery
In person’s exhibiting long term Broca’s Aphasia, it is very common for them to have also suffered damage to the
Insula