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A 67-year-old male presents with the inability to reach for objects in his visual field. He states that he can see the object, but on the clinical exam he can not grasp it accurately. He also is unable to see multiple objects at once. He has a past medical history of atrial fibrillation and an ischemic injury is suspected. A brain MRI would show which of the following areas of the brain is/are affected?
A 77-year-old male presents with a 1-year history of worsening bradykinesia, recurrent falls, and a shuffling gait. Past medical history is significant for REM-sleep behavior disorder and diet-controlled hypertension. Neurologic examination reveals a tremor at rest that improves with movement, along with bilateral upper-limb rigidity. Impaired dopaminergic signaling is most likely to be found in which of the following locations?
A 19-year-old college student presents with an inability to look up at the board in class. On exam, he has upward paralysis but with preserved downward gaze. Pupillary accommodation is normal, but they remain dilated with the light shining. Where is the most likely location of the lesion?
Of the following, which region of the adult brain is most susceptible to hypoperfusion injury and ischemia?
Immunohistochemical staining with GFAP is particularly useful in identifying which of the following cell types?
Which of the following best describes the clinical features seen in transcortical motor aphasia?
Which of the following arteries supplying the thalamus provides supply to the lateral geniculate nucleus (LGN)?
A 23-year-old female with a history of optic neuritis presents with a 1-week history of left leg weakness. Neurologic examination reveals decreased strength of the left lower extremity. A lumbar puncture reveals oligoclonal bands with lymphocytic pleocytosis. What stain can be used to identify the dysfunctional cells in this condition?
Based on the histopathologic findings shown below, how long ago did this patient experience an ischemic stroke?