There are five stages of sleep; Stages 1-4, and then REM (rapid eye movement) sleep, in which dreaming occurs.
Truly "deep" sleep does not occur during REM sleep. REM sleep is when you are dreaming. It is deeper than light sleep, but not as far down in unconsciousness as "deep" sleep.
the deep, dreaming part of sleep known as rapid eye movement (REM) sleep. Normally when people fall asleep, they experience 90 minutes of non-REM sleep, which is then followed by REM sleep. People with narcolepsy, however, enter REM sleep immediately
Most vivid dreams occur during REM sleep, which stands for Rapid Eye Movement. REM The vividness of dreams might depend more on whether one awakens directly from the dream or not, rather than the stage of sleep where dreams occur. Sleep studies have shown that REM (rapid eye movement) sleep correlates closely with dreaming, but dreams occur during other sleep stages as well. Night terrors, sleep walking and other disturbances tend to appear during deep or slow-wave sleep, Stage N3. See the attached Wikipedia article, below, for further information and resources. In REM sleep. REM-sleep. It stands for rapid eye movement, a characteristic of dreaming in which the eyes flutter side to side very quickly as the brain works. It happens during stage 5 of sleep.
when they are dreaming
Dreams occur naturally because during sleep, the conscious mind relaxes and the subconscious mind processes events and experiences of the past day. Different parts of the physical brain become active during different stages of sleep, which correspond with dreaming and non-dreaming states.
You move in your sleep according to what you're dreaming about
REM is already an abbreviation of Rapid Eye Movement, a phase of sleep where dreams usually occur.
You might be looking for the term REM, which stands for Rapid Eye Movement sleep. However, more recent research has shown that different kinds of dreaming, including Night Terrors, occur during non-REM sleep. See the Wikipedia article attached below for more information and links to study documents.
The small minority of people who do sometimes talk when asleep appear to do so during the NREM or non rapid eye movement phases of their night's total sleep, and do not appear to remember dreaming in connection with what they said.
They are dreaming
Yes ;)