Upper motor neuron problems

Question 1

Where is the lesion?

Answer 1

Above the anterior horn cell.

Question 2

What are the characteristics?

Answer 2

Spasticity, weakness, increased reflexes

Question 3

What might a brainstem lesion look like?

Answer 3

Dysarthria, horners syndrome (constriction of pupil, dropping upper eyelid), spinthalamic sensory loss

Question 4

What might a lesion to the motor cortex look like?

Answer 4

Dysphasia, hemianopia (blindness over half the field of vision) and agnosias (inability to process sensory info)