Chapter 8.3: Why Sleep? Why REM? Why Dreams? Flashcards
Certain animal species have evolved to sleep very little under which of these circumstances?
The environment is about the same 24 hours a day
How do whales and dolphins get oxygen at night?
They sleep in just about one hemisphere at a time
When frigate birds spend weeks at sea, what do they do about sleep?
They sleep only in brief episodes, not much overall
If we want to predict how many hours a day some species sleeps, which of these questions would be most helpful in making that prediction?
What does the animal eat?
Sleep often improves memory. How?
Certain synapses become weakened, enabling others to stand out by contrast
Of the following groups, which one tends to spend the highest percentage of sleep in the REM stage?
Infants
According the neurocognitive hypothesis, what are dreams?
Dreams are thinking that occurs under unusual conditions
