Question

which of the following statements about human sleep cycles is true? multiple choice after each successive cycle, time spent in rem sleep decreases by half. the sleep cycle pattern is consistent for an individual across the life span. typically, an individual experiences four to five sleep cycles each night. the time spent in stages 3 and 4 of nrem sleep increases in the later sleep cycles.

Explanation:

• REM sleep time actually increases in successive cycles, not decreases by half.
• Sleep - cycle patterns change across the lifespan, e.g., infants and the elderly have different patterns.
• Typically, an individual has 4 - 5 sleep cycles per night.
• Time in stages 3 and 4 of NREM sleep decreases in later sleep cycles.

Answer:

Typically, an individual experiences four to five sleep cycles each night.