Which statement characterizes the absolute refractory period?
A. The neuron cannot fire again because the potassium channels are unable to open.
B. The neuron cannot fire again because the sodium channels are unable to open.
C. The neuron can fire again but only to a stronger-than-threshold stimulus.
D. The neuron can fire again but only at a much slower rate.
Answer: B
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Which of the following statements about polygraph tests is most accurate?
A. Polygraphs have been shown to be 90 to 100 percent accurate. B. Polygraphs cannot be counted on, because they have many limitations. C. Polygraphs are the best way of determining someone's guilt. D. Polygraphs are often the most important piece of evidence in a trial.
Animals will not self-administer heroin or other opiates
a. True b. False Indicate whether the statement is true or false
Sigmund Freud's primary research approach was __________
a) the naturalistic study. b) survey research. c) experimental study. d) the case study.
__________ refers to the gradual reduction of attentional processes due to the repeated or
continued presence of a stimulus. Fill in the blanks with correct word