The hindbrain structure involved with sleep and arousal is the

In the experiment by Tordoff and Friedman (1988), reduced eating in a hungry rat was noted after

a. infusions of glucose or fructose into the hepatic portal vein. b. removal of nutrients from the stomach. c. the investigators cut the hepatic branch of the vagus nerve. d. placement of nutrients directly into the stomach. e. 2-DG was injected into the hepatic portal vein.

Which functional assessment method(s) demonstrates a functional relationship?

a. interview b. functional analysis c. A-B-C observation d. all of these