What does confabulation mean in medical terms and how is it different from lying?

Confabulation, which has also been referred to as “honest lying”, is the creation of false memories without the intention to deceive others.  People who confabulate believe they are conveying true memories when, in fact, they are not.  People with dementia or brain injuries may confabulate.  Lying, on the other hand, is the deliberate misrepresentation of the truth.