12. In an experiment on classical conditioning, a tone is followed by a puff of air to the eyes. After several repetitions, subjects blink their eyes when they hear the tone. In this experiment the tone is the ____ and blinking to the tone is the ___
a.conditioned stimulus; unconditioned stimulus
b.conditioned stimulus; conditioned response
c. unconditioned stimulus; unconditioned response
d. conditioned response; unconditioned response
13. An action potential:
a. is also known as the nerve impulse
b. is an all-or-none depolarization
c. is produced by a "massive" influx of sodium ions into the neuron
d.is produced at the axon hillock when the "trigger threshold" of approximately -55 millivolts is reached
e.all of the above
14. Suppose someone with brain damage suffers loss of interest in sex, disturbances in eating behavior, and has difficulty regulating body temperature. What part of the brain is likely damaged?
a. medulla
b. thalamus
c. hypothalaumus
d. pons
