Mae is studying for an exam on the action potential. She writes in her notes that the sodium channel closes ______.
A. when the electrical gradient for sodium is eliminated
B. after the neuron reaches threshold
C. at the peak of the action potential
D. as a result of the refractory periods
Answer: B
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By about ____ months of age, different circuits in the brain begin to control infants' looking at faces, allowing infants to distinguish different faces
a. 2-3 b. 7-8 c. 11–12 d. 14–16
One piece of evidence that suggests the survival value or adaptation theory of sleep may partially explain why we sleep is the finding that:
a. people show the same pattern of sleep after inactive days and active days b. people show more REM-sleep after an inactive day than after an active day c. large, grazing animals that can't easily hide sleep only a few hours a day d. people show less sleep disturbance in normal daylight cycles than in conditions of constant light
Many popular mnemonic devices depend on the use of:
a. visual imagery b. semantic encoding c. abstract encoding d. phonemic encoding
Intelligence test results should not be the only things used to determine intellectual developmental disorder, because intelligence test scores:
A) are not positively correlated with school performance. B) lack reliability. C) don't indicate level of adaptive behavior. D) lack validity.