Breuer observed an association between recalling past traumatic events and expression of the original emotion in hysterics. This resulted in:

"All or none" is the principle stating that __________

a) a neuron either fires or does not fire. b) a neuron fires at full strength or not at all. c) all the dendrites must be receiving messages telling the neuron to fire or it will not fire at all. d) all somas must be receiving messages telling the neuron to fire or it will not fire at all.

The mere aroma of food ______

a. has little or no affect, by itself, in arousing hunger b. serves as an incentive to eat, but does not arouse the primary drive of hunger c. arouses the primary drive of hunger, although it does not serve as an incentive to eat d. serves as an incentive to eat and arouses the primary drive of hunger