📗 -> 02/27/25: Aphasia’s
🎤 Vocab
âť— Unit and Larger Context
Small summary
✒️ -> Scratch Notes
- A deficit: Wernicke’s
- M deficit: Halting speech, broca’s
- B deficit:
- M -> A deficit: Conduction aphasia, can’t hear something then repeat it
- Auditory deficit: Something in the cochlea
- Motor deficit: Intact language etc, unable to actually execute the motor commands
- Orabuchal apraxia: Test for by asking to do simple motor commands, like make a kissy face, lick an ice cream cone, sip a straw
Broca’s Area - Speech Production
Wernicke’s - Speech Comprehension
Conduction Aphasia
- Disconnection syndrome
- Impaired transfer of acoustic image of words to motor programs via arcuate fasciculus
Limitations of Wernicke Model:
- Dissociations between speech perception and speech comprehension
- Bilateral activity in functional imaging studies
- Right hemisphere might have a role in understanding intonation (really? vs. really?)
Speech Tasks
Each of the below are slightly different from each other, and draw on different substrates.
Speech Comprehension Tasks
- Show me the tree (out of 4 pictures)
Word comprehension
- What does a pediatrician do ?
Follow the instructions:
- Touch your nose and then point to the ceiling.
Speech (Sound) Perception Tasks
- “Phoneme discrimination”:
- TAZ DAZ MONT MANT PAS PAZ
How many syllables ?
- caterpillar, thorough, estuary etc.
Syllable detection (in pseudowords) press a button when you hear “det”
- manideten betenship plomesdet etc.
Uses
Surprisingly, there’s a double dissociation between language comprehension tasks and speech perception
- This contradicts the flow that we would expect from Wernicke’s model
🧪 -> Refresh the Info
Did you generally find the overall content understandable or compelling or relevant or not, and why, or which aspects of the reading were most novel or challenging for you and which aspects were most familiar or straightforward?)
Did a specific aspect of the reading raise questions for you or relate to other ideas and findings you’ve encountered, or are there other related issues you wish had been covered?)
đź”— -> Links
Resources
- Put useful links here
Connections
- Link all related words