What is our current understanding of the cause of migraine headaches?
What will be an ideal response?
In the past, it was believed the migraines were caused by narrowing followed by dilation of blood vessels. This idea is now being replaced by the idea that a wave of cerebral electrical activity may cause the aura (or warning sensation), and that headaches develop when the wave reaches pain-sensitive blood vessels. The wave may be triggered by stress, hunger, hormone fluctuations, foods, alcohol, too much sleep, caffeine withdrawal, or noise. It has recently been shown that the neurotransmitter serotonin becomes depleted in the brain during a migraine attack.
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Which of the following drugs would MOST likely result in a fatal overdose?
a. LSD b. mescaline c. marijuana d. morphine
The sodium-potassium pumps of a neuron are major consumers of energy.
Answer the following statement true (T) or false (F)
Someone leaves a phone number on your answering machine. You repeat the number to yourself as you start to dial. Then, the doorbell rings, and you rush to see who is there. When you return to the phone, you have completely forgotten the number. This illustrates how interruption, or displacement, affects ___________ memory
a. eidetic b. sensory c. short-term d. long-term
Louise wants to know when her baby boy will develop various skills. The answer depends on
his genetic programming. the home environment. the interaction between genes and environment. his father's involvement.