What is the primary difference between temporal summation and spatial summation?
A. Only spatial summation can produce an action potential.
B. Spatial summation depends on contributions from more than one sensory neuron.
C. Temporal summation produces a hyperpolarization instead of a depolarization.
D. Spatial summation alters the response of more than one postsynaptic cell.
Answer: B
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Dr. Tsuei is studying the effects of sleep deprivation on interpersonal skills. He is testing the interpersonal skills of 20-25 year-old males who have been sleep deprived for 24 hours, 36 hours, or 48 hours. In this study, the dependent variable is the ____
a. age of the research participants b. interpersonal skills of the research participants c. length of time that the research participants are deprived of sleep d. type of interpersonal skills test used in the study
Studies of infants raised in deprived orphanages for the first eight or more months of their lives indicate that
a. a lack of a biological mother during the first year of life leads to significant and lasting developmental delays. b. male infants are more at risk for a lack of early life stimulation. c. children who are deprived of intellectual stimulation during the first six months of life often display long-term negative impact on their cognitive skills. d. being surrounded by infant peers can make up for the lack of stimulation by adults.
Free radicals are capable of reacting violently with other molecules, sometimes tearing them apart
Indicate whether this statement is true or false.
Cluster C personality disorders are characterized by which of the following:
A. Excessive guilt and remorse B. Lack of emotional expressiveness C. Distorted thinking and cognition D. Anxiety and social withdrawal