When your mental processes are sufficiently different from normal waking experience that you or an observer notice significant changes in how you function, you are in a(n) state of consciousness.

When your mental processes are sufficiently different from normal waking experience that you or an observer notice significant changes in how you function, you are in a(n) altered state of consciousness.

Altered state of consciousness is also termed as altered state of mind or mind alteration. It is a condition in which an individual is significantly different from a normal waking state. Example of altered state of consciousness include phenomenon such as day-dreaming. Hallucination is also a kind of altered state of consciousness. Some scientific studies show that altered state of consciousness can be generated intentionally such as day-dreaming.

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