Varying states of awareness are best monitored using _____, which provides an overall measure of brain activity.
a. positron emission tomography
b. magnetic resonance imaging
c. an electroencephalogram
d. a CAT scan
Answer: c. an electroencephalogram
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Delirium is thought to be more common in the elderly due to __________.
A. their weakened immune systems B. their relative lack of physical and mental activity C. chemical imbalances D. normal age-related changes in the brain
Historically, psychiatric terms have been abused by being applied to culturally disapproved behaviors that were not really disorders. Three of the following are not considered disorders today. Which of the following is still considered to be a recognized disorder?
a. childhood masturbation b. homosexuality c. paraphilias d. nymphomania
What does it really mean when we say that a neuron has a resting potential of -70 mV? a. The difference between the electrical environment of the interior of the cell and the exterior of the cell is 70 mV, with the interior being more negative than the exterior. b. The difference between the electrical environment of the interior of the cell and the exterior of the cell is 70 mV, with the
exterior being more negative than the interior. c. The interior of the cell has a charge of -70 mV, whereas the exterior of the cell has a charge of +70 mV, for a total difference of 140 mV. d. The interior of the cell has a charge of -35 mV, whereas the exterior of the cell has a charge of +35 mV, for a total difference of 70 mV.
Autonomous work groups are least likely to feature
A. members who participate in hiring and firing decisions. B. rotating job duties. C. members who design and order their own tools. D. managers who supervise the groups.