According to the law of specific nerve energies, the brain tells the difference between one sensory modality and another by ____.
a. which neurotransmitter is released
b. which neurons are active
c. the velocity of the action potentials
d. the amplitude of the action potentials
Question 2
If people with Down syndrome live long enough, they almost invariably develop ____.
a. Korsakoff's syndrome
b. Parkinson's disease
c. Huntington's disease
d. Alzheimer's disease