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smash_logs2010-09-24 03:20 pm
betterthanawiki.livejournal.com) wrote in smash_logs2010-09-24 03:20 pm
Entry tags:
FINALLY a class log whoaaa
Who: Uxie, some cool dudes
What: Advanced Psych class 1.
Where: da class
When: Sept 24
Warnings: EDUCATIONNNNN. Also that link in his lecture links to a real human brain picture if you're squeamish about that.
[Welcome to advanced psych, broskis. Uxie knows better than to bother trying to lift a marker that probably weighs as much as he does, so he had the foresight to request a TA set up a projector. He's sitting on it as people file in, both hands holding the remote.]
Good afternoon, class. Today's lecture will be on language and cognition. Specifically, we'll be focusing on aphasias. An effective way to study how an underlying process works, after all, is to note how the process is interrupted once damage is incurred.
I assume you're all familiar with Broca's and Wernicke's areas, correct? Both areas are crucial for language comprehension. Damage to each area will produce a unique variety of aphasia -- that is, a deficiency in understanding or producing spoken language.
People afflicted with Broca's aphasia have tremendous difficulty in producing speech, though their comprehension of others is mostly unhindered. Often, they can only manage one-word answers to questions or say "I don't know". Speech is typically agrammatical -- that is, the rules of syntax are violated. For example: a patient with Broca's aphasia, when asked about his home address, replied, "Oh dear. Um. Aah. Oh! Oh dear. Very-there-were-ave avedeversher avenyer.”
For the record, his house was on Devonshire Avenue.
In a nutshell, the understanding is intact, but it's the output that suffers.
Wernicke's aphasia, on the other hand, inhibits fluency and comprehension. They also have issues with repitition, naming, and writing. Speech is nonsensical, marked with neologisms but respects rules of syntax, correct use of pauses, and so on and so forth. Patients with Wernicke's aphasia, interestingly enough, often have no idea whatsoever that their speech is incomprehensible. As for an example... a patient is asked to describe what he does for a living. He answers, “I wanna tell you this happened when happened when he rent… and he roden all of these arranjen from the pedis on from iss pescid.”
Those two are not the only types of aphasia, however. There's also conduction aphasia, a result of damage to the arcuate fascisculus, which connects Broca's and Wernicke's area in the brain. Spontaneous speech, as in everyday conversation, is nearly normal, and comprehension seems to be barely affected. Even so, patients with this form of aphasia are completely, utterly unable to repeat back anything that they have heard, no matter how attentively they're listening.
So what do aphasias show us about normal language processing? The existence of these three aphasias alone provides converging evidence for dissociation between syntactic processing and semantic processing of language. One can be disrupted without affecting the other, but there is normally interaction between these processes through the arcuate fasciculus.
What: Advanced Psych class 1.
Where: da class
When: Sept 24
Warnings: EDUCATIONNNNN. Also that link in his lecture links to a real human brain picture if you're squeamish about that.
[Welcome to advanced psych, broskis. Uxie knows better than to bother trying to lift a marker that probably weighs as much as he does, so he had the foresight to request a TA set up a projector. He's sitting on it as people file in, both hands holding the remote.]
Good afternoon, class. Today's lecture will be on language and cognition. Specifically, we'll be focusing on aphasias. An effective way to study how an underlying process works, after all, is to note how the process is interrupted once damage is incurred.
I assume you're all familiar with Broca's and Wernicke's areas, correct? Both areas are crucial for language comprehension. Damage to each area will produce a unique variety of aphasia -- that is, a deficiency in understanding or producing spoken language.
People afflicted with Broca's aphasia have tremendous difficulty in producing speech, though their comprehension of others is mostly unhindered. Often, they can only manage one-word answers to questions or say "I don't know". Speech is typically agrammatical -- that is, the rules of syntax are violated. For example: a patient with Broca's aphasia, when asked about his home address, replied, "Oh dear. Um. Aah. Oh! Oh dear. Very-there-were-ave avedeversher avenyer.”
For the record, his house was on Devonshire Avenue.
In a nutshell, the understanding is intact, but it's the output that suffers.
Wernicke's aphasia, on the other hand, inhibits fluency and comprehension. They also have issues with repitition, naming, and writing. Speech is nonsensical, marked with neologisms but respects rules of syntax, correct use of pauses, and so on and so forth. Patients with Wernicke's aphasia, interestingly enough, often have no idea whatsoever that their speech is incomprehensible. As for an example... a patient is asked to describe what he does for a living. He answers, “I wanna tell you this happened when happened when he rent… and he roden all of these arranjen from the pedis on from iss pescid.”
Those two are not the only types of aphasia, however. There's also conduction aphasia, a result of damage to the arcuate fascisculus, which connects Broca's and Wernicke's area in the brain. Spontaneous speech, as in everyday conversation, is nearly normal, and comprehension seems to be barely affected. Even so, patients with this form of aphasia are completely, utterly unable to repeat back anything that they have heard, no matter how attentively they're listening.
So what do aphasias show us about normal language processing? The existence of these three aphasias alone provides converging evidence for dissociation between syntactic processing and semantic processing of language. One can be disrupted without affecting the other, but there is normally interaction between these processes through the arcuate fasciculus.