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Mapping the Wernickes Cortex


This short video describes the techniques for mapping the Wernicke's, or language, or receptive speech cortices. This is a 32 year-old female who presented with a left posterior temporal lobe tumor. I allow the patient to read and name objects without stimulation initially, so that she can get used to the process of naming and mapping. Let's go ahead and listen to this patient, while naming an object and reading without stimulation.

[Patient] The man cuts the lawn with a lawn mower.

For the next episode of reading and naming, please listen. When the stimulation is applied, I typically apply the stimulation just in the middle of the sentence, while the patient is reading. So when the patient sees the object, the stimulation has already been applied, and that specific part of the cortex is interfered with via stimulation. Let's go ahead and listen to the next reading.

[Patient] The boy colored with a. Um, crayon.

So as you can see, I applied the stimulation just around the middle of the sentence, where she was reading the word colored. When she arrived at the object, she was unable to name, however, when the stimulation was elevated and relieved, the patient was able to name the object. Let's go ahead and proceed further.

Okay, next one.

[Patient] She slept in a Sleep Number bed. The men rode in the, um, .

So as you can see, she was allowed to read a name without stimulation in between those episodes, when her brain was stimulated. Via cortical stimulation. She's able to read, but she's unable to name. And this is the typical method we use for mapping the language cortices. Thank you.

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