Aphasia

Dominant hemisphere

  • Right handed: over 90% has language center at left hemisphere
  • Left handed: 30-70% has language center at left hemisphere
    • Right brain dominant: when right brain injured, less severe symptom, some function are on left brain

Syndromes

  • Expressive (Broca’s): problem talking
    • Broca’s area affected
  • Receptive (Wernicke): problem comprehending
    • Wernicke’s area affected
  • Conduction: problem with repeating
    • arcuate fasciculus affected
  • Global: all of the above
    • large area of dominant hemisphere affected, usually has hemiparesis
  • Anomic: impaired ability to name an item
    • different areas around the above
    • basal temporal lobe, the anterior inferior temporal lobe, the temporo-parieto-occipital junction, and the inferior parietal lobe

Exam

  • Follow command
  • Repeat
  • Name objects

References