Which of the following is a key characteristic of Parkinson's disease?
a. ballistic movements of the limbs
b. difficulty in sitting in a chair
c. tremor during rapid motor movements
d. slowness of movement
e. excessive movement of the tongue and lips
Question 2
The direct pathway between the basal ganglia and the motor cortex is ________ for motor movement, whereas the overall effect of the indirect pathway is ________.
a. excitatory; inhibitory
b. inhibitory; excitatory
c. excitatory; excitatory
d. inhibitory; inhibitory
e. required; not required
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