Final answer:
The average person will undergo four to six dream cycles during 6 hours of sleep, with each sleep cycle including different stages and lasting about 90 minutes.
Step-by-step explanation:
The average person will go through approximately four to six dream cycles in a 6-hour sleep period. During a typical night's sleep, a person goes through multiple stages of sleep that cycle throughout the night. These stages include stage 1 (transitional sleep), stage 2 (light sleep), stage 3 (deep sleep), and Rapid Eye Movement (REM) sleep. Stage 2 sleep is distinctive for having sleep spindles and K-complexes which are associated with learning and memory.
A full sleep cycle, from stage 1 through REM sleep, typically lasts about 90 minutes. Therefore, in a span of 6 hours, it is reasonable to estimate that a person might complete around four dream cycles, as REM sleep is the stage where dreaming mostly occurs. However, the exact number can differ based on individual sleep patterns and the duration of each sleep stage.