The Om symbol is known as a symbol of the sound of the universe. It represents the sound in a visual form. The Om is a short "seed" mantra, which can be chanted to connect and energize the chakras. It is found throughout many Hindu texts, prayers, and ceremonies.
In the symbol, the waking state is represented by the bottom curve, the dream state is the middle curve and the state of deep sleep is represented with the upper curve. The crescent shape above the curves denotes Maya, or Illusion, which is the obstacle that sits in the way of reaching the highest state of bliss. The dot at the top of the symbol represents the absolute state, which is the fourth state of consciousness and is absolute peace and bliss. This fourth state is believed to be the state in which someone could truly connect with the Divine.