Lecture 15- Language Flashcards
What are the three types of aphasia?
-receptive aphasia: inability to comprehend language -expressive aphasia: inability to generate written or spoken language -global aphasia: combines expressive and receptive aphasia
What are the signs of expressive aphasia?
-can form words but cannot say their name, can comprehend language, can only repeat very simple words (not even bread) -has normal cognitive function, is emberassed and understands the situation
What does generative language mean?
-can take aspects and generate almost infinite variety
What are the cases of aphasia evidence for?
-evidence for specific part of the brain produces language -historically significant (Paul Broca etc. )
What is language development like at 4 months?
-Babbles many speech sounds.
What is language development like at 10 months?
-Babbling reveals household’s language.
What is language development like at 12 months?
-One-word stage.
What is language development like at 24 months?
-Two-word, telegraphic speech -like in a telegram -as short as possible
What is language development like at 24+ months?
-Language develops rapidly into complete sentences -many new ones every day -layered meanings (the cup on the table is mine)
Where is Broca’s area?
- on the left hemisphere (only)
- cause of expressive aphasia -about speech production, motor bit of it
What are the 4 parts of the brain involved in the process of language? (old style)
- Broca’s area
- Wernicke’s area
- Primary visual cortex
- Primary auditory cortex
What are the areas involved in processing the written word?
1.Striate Cortex(primary visual cortex)= early visual processing 2.Extrastriate cortex= visual word recognition, recognises it’s a word 3. Inferior frontal cortex= semantic association, what does the word mean 4.Supplementary motor area and other areas near the sylvian fissure= premotor coding, patterns of muscular movements of face and pharynx are made 5.Primary motor cortex=motor control of speech 6.Speech
What are the areas involved in spoken word processing?
1.Primary auditory cortex=early auditory processing 2. Temporoparietal (angular gyrus), anterior superior temporal cortex= auditory word recognition, recognises the sound is a word 3. Inferior frontal cortex= semantic association, what does the word mean 4.Supplementary motor area and other areas near the sylvian fissure= premotor coding, patterns of muscular movements of face and pharynx are made 5.Primary motor cortex=motor control of speech 6.Speech
What is the role of the striate cortex in speech? (written)
-early visual processing
What is the role of extra-striate cortex in speech? (written)
-visual word recognition, words are recognised here
What is the role of primary auditory cortex in spoken word processing?
-early auditory processing
What is the role of tempoparietal cortex (angular gyrus) and anterior superior temporal cortex in spoken speech processing?
-auditory word recognition -recognise that that sound is a word
What is the role of inferior frontal cortex in speech?
-semantic association, what does the word mean
What is the role of supplementary motor area and other areas near the sylvian fissure in speech?
-premotor coding -patterns of muscular movements of face and pharynx are made here