Language and split-brain patients Flashcards
What is language?
Language is a uniquely human form of communication, which follows abstract
rules to combine a discrete set of symbols (sounds, gestures, letters) into an infinite set of possible messages.
‣ Language is acquired without explicit instruction, by children across the globe
What is Broca’s Aphasia?
Broca’s aphasia, is typically caused by damage to the posterior part of the frontal lobe in the dominant hemisphere
Difficulty with expressive language: Individuals with Broca’s aphasia have trouble expressing themselves verbally. They may experience difficulty finding and producing words, and their speech may be characterized by slow, effortful, and halting speech output.
Preserved comprehension: Despite expressive difficulties, individuals with Broca’s aphasia typically have relatively intact language comprehension. They can understand spoken and written language reasonably well.
What is Wernicke’s Aphasia?
Wernicke’s aphasia is associated with damage to the posterior part of the superior temporal gyrus in the dominant hemisphere (usually the left hemisphere).
Fluent but nonsensical speech: Individuals with Wernicke’s aphasia produce speech that is fluent and well-articulated but lacks meaning and coherence. They may string together words and phrases that do not form meaningful sentences.
Impaired comprehension: Wernicke’s aphasia is characterized by significant deficits in language comprehension. Individuals have difficulty understanding spoken and written language and may struggle to follow instructions or engage in meaningful conversation.
What is cerebral lateralization?
The left cerebral hemisphere contributes to language function more than the right, in most people
Where is Broca’s area located?
left inferior frontal gyrus
Where is Wernicke’s area located?
left superior temporal gyrus
