Explain how the activity of brain cells is measured using autoradiography
What will be an ideal response?
Answer: Brain cells require glucose as fuel for activity. 2-DG, like glucose, is taken up into neurons, but cannot be used for energy. If a radioactive version of 2-DG is injected into an animal, radioactive 2-DG molecules will accumulate in the brain as a function of the relative activity of those cells. Autoradiography will reveal the presence of radioactive molecules in the brain, with a more intense signal in regions that were more active and a less intense signal in less active regions.
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Jean Piaget believed that the __________ fit entirely in a single stage of cognitive development that he called the __________ stage.
A. preschool years; operational B. preschool years; preoperational C. school years; concrete D. school years; operational
In adolescence, self-esteem __________ for most young people
A) remains stable B) declines C) fluctuates a great deal D) rises
Gestalt psychologists proposed that problem solving
A. often involved unconscious processing of a problem. B. sometimes involved insight. C. involves thinking aloud. D. is impacted by past experience. E. All of the above answers are correct.
The success of PDE5 inhibitors for male erectile dysfunction has
A) led to questions about the underlying psychopathology of the disorder. B) encouraged their use in clinical trials for female sexual arousal disorder. C) demonstrated that the prevalence of the disorder was overestimated. D) come despite the drugs' poor performance versus placebo in many studies.