Perception of interdependent opposites
Feelings of interdependent opposites (also known as feelings of duality) is a state of mind that often accompanies ego death. It can be described as a powerful sensation in which one sees, understands and physically feels that reality is based on a system in which the existence or identity of all concepts and situations depend on the co-existence of at least two conditions which are opposite to each other, yet dependent on one another by presupposing each other as logically necessary equivalents. This experience is usually felt to provide deep insight into the fundamental nature of reality and results in feelings that concepts such as life and death, up and down, light and dark, good and bad, matter and antimatter, pleasure and suffering, yes and no, something and nothing, being and non-being each exist as states of harmonious and necessary contrast to their opposite force.