Final answer:
After sleeping for 5 hours, a person will experience REM sleep alternating with non-REM sleep, specifically stage 3 sleep also known as deep or slow-wave sleep, which is marked by low frequency and high amplitude delta waves.
Step-by-step explanation:
After sleeping for 5 hours, as long as a person does not wake up, this person will only experience REM sleep that alternates with non-REM (NREM) sleep. When we sleep, we cycle between NREM and REM stages. Non-REM sleep is composed of three different stages characterized by different brain wave frequencies and amplitudes. The deepest non-REM stage is stage 3 sleep, also known as deep sleep or slow-wave sleep, where brain waves are at their lowest frequency and highest amplitude, known as delta waves. It's in this stage that it becomes more difficult to wake someone up. REM sleep, on the other hand, is characterized by brain activity similar to wakefulness and is when most dreaming occurs.