Quick Answer: Awareness refers to the knowledge or perception of something, a concept widely discussed in psychology and philosophy. As such, it is the ability to consciously perceive, understand, and respond both generally to one's surroundings and specifically to individual stimuli. The concept is often synonymous with consciousness; however, one can be aware of something without being explicitly conscious of it. Essentially, awareness is the state of being attuned to, or mindful of something, whether it is a physical sensation or an idea. The states of awareness are also associated with the states of experience, so that the structure represented in awareness is mirrored in the structure of experience.