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
A microsatellite locus can show linkage to a disease gene
Conjunctivitis, with the characteristic “pinkeye” appearance. A yellow crusty exudate is also common
Stained section of cerebral cortex from autopsy of a patient with Creutzfeldt-Jakob disease
Relationship between the number of CAG repeats in a gene and the age of onset of Huntington disease.
Inverse Relation Between IQ and Disease. Could this explain the Flynn effect?
Loss of brain cells in a transgenic Huntington-disease mouse. (a) Section of normal mouse-brain stri