Question

The activity of mind , when we sleep is called​

Answer 1

Answer:

The different stages of sleep are known as stage 1, stage 2, stage 3 and rapid eye movement (REM) sleep and can be distinguished by the brainwaves in each of these stages.

Step-by-step explanation:

Stage 1 sleep is the lightest stage of sleep that occurs as an individual is falling asleep. There is slow movement of the eyes and activity of the voluntary muscles in the body is reduced. The brainwaves in stage 1 sleep are smaller and more uniform than in the awake state, what are referred to as alpha and theta waves.

In stage 2 sleep, the movement of the eyes ceases and the brain waves become slower than in stage 1. There are also occasional bursts of waves that are more rapid, which are referred to as sleep spindles.

Stage 3 of sleep is characterized by slow, rhythmical brain waves called delta waves. This stage of sleep is very heavy with no movement of the eyes or voluntary muscles, and it is difficult to wake a person in this stage.