Endorphins ________
a. are less powerful than enkaphalins
b. reduce pain messages in the brain
c. are radically different in function from neurotransmitters
d. are found where neurons meet skeletal muscles
Answer: b
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Since Jack's forced retirement, he has experienced overwhelming sadness and has withdrawn from his friends and family. He has gained twenty pounds and has been sleeping much more than usual. Most noticeably, he is no longer interested in participating in his life-long hobby of playing several rounds of golf each week. Most likely Jack is experiencing
A. a fugue reaction. B. bipolar disorder. C. conversion disorder. D. major depressive disorder.
When someone looks at an image, the retina turns the light rays from it into neural messages that go up the optic nerve so the brain can interpret them. This process is called __________.
A. encoding B. storage C. retrieval D. evaluation