Distinguish between REM and NREM sleep. Trace a typical night's sleep through its various stages, explaining what happens at each point
What will be an ideal response?
* Stage 1 is a transitional phase between wakefulness and sleep that is described as drowsiness.
* Stage 2 takes up about 50 percent of an adult's sleep and is marked by the appearance of sleep spindles.
* Stages 3 and 4 are known as slow-wave sleep and are believed to be the most restorative with waking quite difficult.
* REM sleep follows and is characterized by rapid eye movements, dreams, high brain activity, and muscle paralysis.
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In classical conditioning, during extinction the ______ is consistently omitted and the ______ gradually disappears
a. CS; UR b. US; CR c. US; CS d. UR; CR
In what cultures do adolescents tend to be strongly peer-oriented and to value the opinion of their peers highly, especially on day-to-day issues such as how they are dressed and what they say in social situations?
a. Asian b. Western c. developing d. African