What are the four states of consciousness and how do they differ from each other?

The four states of consciousness are waking, dreaming, deep sleep, and a fourth state known as transcendental consciousness. Waking consciousness is when we are alert and aware of our surroundings. Dreaming consciousness occurs during REM sleep when we experience vivid dreams. Deep sleep is a state of unconsciousness where there are no dreams. Transcendental consciousness is a state of deep restful awareness where the mind is completely settled and at peace. These states differ in terms of awareness, activity of the mind, and level of restfulness.