Author Question: In about 90 of patients with Parkinson's disease, there is clear evidence that the disease was ... (Read 76 times)

stevenposner · **on:** Jun 22, 2018

In about 90 of patients with Parkinson's disease, there is clear evidence that the disease was caused by

A) genetic factors.
B) a stroke.
C) a tumor.
D) a neurotoxin.
E) none of the above

Question 2

The major neurochemical correlate of Parkinson's disease is a reduction of

A) cortical acetylcholine.
B) dopamine in the substantia nigra and striatum.
C) acetylcholine in the striatum.
D) serotonin in the cortex.
E) the ratio of acetylcholine to dopamine in the cortex.