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  #1  
Old 06-25-2011
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Neuro Where is the infarcted area?

A 92-year-old woman is brought to the emergency department by her caregiver. The woman had suddenly become drowsy and confused. The examination revealed no cranial nerve deficits and age-normal motor function, but a loss of pain, thermal, vibratory, and discriminative touch sensations on one side of the body excluding the head. CT shows a small infarcted area. Which of the following structures is the most likely location of this lesion?

A) Anterolateral system
B) Medial geniculate nucleus
C) Subthalamic nucleus
D) Ventral posterolateral nucleus
E) Ventral posteromedial nucleus
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Old 06-25-2011
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i guess its ventral posterolateral nucleus..
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Old 06-25-2011
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Default D

D, contralateral VPL

To remember these thalamic nuclei:
M for music, so MGN is hearing
L for light, so LGN is vision
Extremities are lateral to the head, so VPL is sensation in body (arms & legs) and VPM is face because head is medial.

Other answer choice:
Subthalamic nucleus is involved in the indirect/ inhibitory basal ganglia pathway; lesion gives contralateral hemiballismus (wild flailing arm/ leg)

Anterolateral system: ascending pain, temperature and crude touch (not vibratory and discriminative touch).

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Old 06-25-2011
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Agree, D) VPL
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Old 06-25-2011
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Yup i wud go with D. as well
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Old 06-26-2011
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Quote:
Originally Posted by heights View Post
D, contralateral VPL

To remember these thalamic nuclei:
M for music, so MGN is hearing
L for light, so LGN is vision
Extremities are lateral to the head, so VPL is sensation in body (arms & legs) and VPM is face because head is medial.

Other answer choice:
Subthalamic nucleus is involved in the indirect/ inhibitory basal ganglia pathway; lesion gives contralateral hemiballismus (wild flailing arm/ leg)

Anterolateral system: ascending pain, temperature and crude touch (not vibratory and discriminative touch).

Thanks a lot man.you made my life simpler now.
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Old 06-26-2011
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Thumbs Up correct answer

Quote:
Originally Posted by heights View Post
D, contralateral VPL

To remember these thalamic nuclei:
M for music, so MGN is hearing
L for light, so LGN is vision
Extremities are lateral to the head, so VPL is sensation in body (arms & legs) and VPM is face because head is medial.

Other answer choice:
Subthalamic nucleus is involved in the indirect/ inhibitory basal ganglia pathway; lesion gives contralateral hemiballismus (wild flailing arm/ leg)

Anterolateral system: ascending pain, temperature and crude touch (not vibratory and discriminative touch).

D) Ventral posterolateral nucleus

that @heights!
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