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Cortex Lesions 01

Topic: Anatomy

Created on Sunday, January 27 2008 by jdmiles

Last modified on Sunday, January 27 2008.

A well-intentioned but misguided grizzly bear impersonator hacks out portions of your right cerebral cortex, specifically, your posterior superior temporal sulcus and dorsolateral Frontal Cortex. You will now have which of the following deficits?

 
        A) Aphasia
 
        B) Dyslexia
 
        C) Right hemineglect
 
        D) Loss of prosody
 
        E) Gerstmann syndrome
 

 


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This question was created on January 27, 2008 by jdmiles.
This question was last modified on January 27, 2008.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ANSWERS AND EXPLANATIONS




A) aphasia

This answer is incorrect.


A lesion in the areas described would not result in aphasia.  (See References)

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B) dyslexia

This answer is incorrect.


A lesion in the areas described would not result in dyslexia.  (See References)

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C) right hemineglect

This answer is incorrect.


A lesion in the areas described would not result in hemineglect  (See References)

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D) loss of prosody

This answer is correct.


Functional imaging studies have helped to identify regions involved in prosody. These areas include the posterior superior temporal sulcus and dorsolateral Frontal Cortex.  (See References)

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E) Gerstmann syndrome

This answer is incorrect.


Gerstmann syndrome (a constellation of dysgraphia, dyscalculia, finger agnosia, and left-right confusion) is associated with lesions in the dominant hemisphere near the angular and supramarginal gyri. A lesion of the posterior superior temporal sulcus and dorsolateral Frontal Cortex would not produce Gerstmann syndrome.   (See References)

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References:

1. Wildgruber, D., Riecker, A., Hertrich, I., Erb, M., Grodd, W., Ethofer, T., and Ackermann, H. (2005). "Identification of emotional intonation evaluated by fMRI." Neuroimage, 24(4) 1233-41. (PMID:15670701)
2. Strelnikov, K.N., Vorobyev, V.A., Chernigovskaya, T.V., and Medvedev, S.V. (2006). "Prosodic clues to syntactic processing--a PET and ERP study." Neuroimage, 29(4) 1127-34. (PMID:16188459)
3. Vallar, G. (2007). "Spatial neglect, Balint-Homes' and Gerstmann's syndrome, and other spatial disorders." CNS Spectr, 12(7) 527-36. (PMID:17603404)
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anatomy
Cortex Lesions 01
Question ID: 012708081
Question written by J. Douglas Miles, (C) 2006-2009, all rights reserved.
Created: 01/27/2008
Modified: 01/27/2008
Estimated Permutations: 15120

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