Destructive lesions of the frontal eye field of the

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Unformatted text preview: h y s i c i a n n o t e d t h a t w h e n t h e p a t i e n t 's h e a d w a s g e n tly r o ta te d to th e r ig h t th e tw o e y e s d e v ia te d to th e le ft. O n r o ta tio n o f th e p a t i e n t 's h e a d t o t h e l e f t , t h e p a t i e n t 's e y e s s t i l l l o o k e d t o t h e l e f t . W h i c h a r e a o f t h e c o r te x is lik e ly to b e d a m a g e d in th is p a tie n t? Destructive lesions of the frontal eye field of the left cerebral hemisphere caused the two eyes to deviate to the side of the lesion and an inability to turn the eyes to the opposite side. The frontal eye field is thought to control voluntary “scanning movements” of the eye and is independent of visual stimuli. 11 Quiz on Thalamus & Cortex A 2 5 y e a r o ld s o ld ie r w a s w o u n d e d b y a n a n tip e r s o n n e l b o m b in V ie tn a m . A s m a ll p ie c e of shrapnel entered the right side of his skull over the precentral gyrus. Five years la te r , h e w a s e x a m in e d b y a p h y s ic ia n d u r in g a r o u tin e p h y s ic a l c h e c k u p a n d w a s fo u n d to h a v e w e a k n e s s o f th e le ft le g . T h e p h y s ic ia n c o u ld n o t d...
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This note was uploaded on 08/24/2011 for the course NEUROSCIEN Neuroanato taught by Professor Skeen during the Fall '09 term at University of Delaware.

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