Language Flashcards
Function of Wernicke’s area?
Comprehension of spoken language
Function of Broca’s area?
Instruction for language output
Planning movements to produce speech
Grammar
Area analagous to Broca’s?
Instructions for producing non-verbal communication (gestures and intonation of speech)
Area analagous to Wernicke’s?
Interpreting nonverbal signals from others
What is the pathway of language?
- Primary auditory cortex
- Auditory association cortex
- Wernicke’s area
- Subcortical connections (arcuate fibers)
- Broca’s area
- Oral and throat region of sensorimotor complex
What does the lateral temporal complex do?
Semantic knowledge and word recognition (knowing that C-A-T is cat)
Auditory Agnosia
- Inability to identify an object despite being able to perceive it
- Cannot describe a sound that has been heard
What does a lesion to the unimodal sensory association cortex bilaterally result in?
Auditory agnosia
What type is receptive aphasia?
Wernicke’s
What type is expressive aphasia?
Broca’s
Characteristics of Wernicke’s area lesion?
- Receptive/fluent aphasia
- Unable to understand what is said to them
- Alexia
- Agraphia
- Fluent paraphasic speech
- Word salad maybe
Characteristics of Broca’s area lesion?
- Expressive/non-fluent aphasia
- Possible mutism
- Less severe show limited speech
- Slow, labored, poorly enunciated speech
- Nonessential words omitted
Global lesion
- results in global aphasia (both Broca’s and Wernicke’s gone)
- D/t lesion of lateral sulcus
Transcortical lesion
- Motor or sensory
- Can repeat
Conduction aphasia
- D/t lesion @ supramarginal gyrus and arcuate fasciculus
- Cannot repeat
- Good comprehension
- Intact fluency
- Reading intact, writing impaired
- Word-finding difficulties
