Final - Language Flashcards
Broca’s Aphasia is Characterized by …
Difficulty in production of speech.
Very aware of deficit and get frustrated.
- Non-fluent
- Production
Broca’s area is near the area of…
Motor control of the mouth and lower face.
Frontal Lobe
Wernicke’s Area is in What Lobe?
Temporal
Next to primary auditory cortex
Wernicke’s aphasia is characterized by …
The inability to comprehend speech.
- Fluent
- Comprehension
Speech is most often lateralized to what hemisphere of the brain?
Left
Prosody Definition & Hemisphere
Prosody = Rhythm, tone and emphasis in speech.
Most often lateralized to the right hemisphere.
Agraphia
Characterized by inability to write.
Dyslexias
Come in many forms and are characterized by difficulties in reading and writing.
Split Brain Patients
Sever the CC in patients with severe seizure disorder.
Language Hemispheric Specialization Stats
- Language is in the left hemisphere in about 95% of people who are right handed.
- Language is in the left hemisphere in about 75% of people who are left handed.
2 Tasks to Determine if Language is Lateralized to the Left Hemisphere
- WADA Test
- Dichotic Listening Test
WADA Test
A test for brain lateralization.
Ex. Inject barbituates up left carotid artery (feeds left side of brain) to put that side of the brain to sleep. Then do tests.
Dichotic Listening Test
Brain lateralization test.
If want to find out if someone has language in left hemisphere, introduce language noise into right ear (it will cross) and distracting noises into left ear and see if can identify spoken words.
Side-Note: Hooked Writing
- People who write with hand hooked have language in the same hemisphere as the hand they’re writing with.
- (neuro-linguistic theory)
Is language entirely in the left hemisphere?
NO