Confabulation

Confabulation is the confusion of imagination with memory, and/or the confusion of true memories with false memories.

People with Korsakoff's syndrome characteristically confabulate by guessing an answer or imagining an event and then mistaking their guess or imagination as an actual memory.

It can also occur as a result of damage to the ACoA, or Anterior communicating artery, in the Circle of Willis.

Confabulation also appears to be a common occurrence in normal individuals under experimental circumstances, as shown by research into choice blindness.