________ is a network of structures including the brain stem, medulla, and thalamus that determines arousal, one aspect of consciousness.
A. Reticular activating system
B. Pallidothalamic tract
C. Hypothalamospinal tract
D. Vasomotor center
Answer: A
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According to researchers, what is a key trigger of postpartum mood disorders?
A. societal pressures B. traumatic birthing experience C. hormonal changes D. lack of family support
Subjects deprived of REM sleep
a. attempted to dream less frequently after several nights. b. showed a REM rebound effect when allowed to sleep normally. c. showed no signs of distress during the day. d. did not dream for two or three nights.
Genetic research shows that
a. approximately 50 percent of chimpanzee and human DNA is identical. b. humans and primates are only 10 percent genetically identical. c. individuals from around the world are only 50 percent genetically identical. d. individuals around the world are over 99 percent genetically identical.
During the past 3 months, you have had several bouts of the flu. Recently, you went to a restaurant where you consumed a new food you had never tasted before. That evening you became sick. However, you do not associate eating this new food with being sick. This is called ______.
A. contrast blocking B. overshadowing C. cue confabulation D. UCS preexposure effect