Confabulation is generally defined as the unintentional production of false, distorted, or displaced memories or statements about oneself or the world, which the individual sincerely believes to be true, often filling gaps in memory. These statements can range from plausible distortions to bizarre or fantastic narratives. Confabulation is frequently observed in patients with organic amnesia, and is strongly associated with damage to the frontal lobes, particularly the orbitofrontal and ventromedial prefrontal cortex. Other neurological causes include traumatic brain injury (TBI), anterior communicating artery (ACoA) aneurysms, Korsakoff's syndrome, and Alzheimer's disease. A hallmark of confabulation is the patient's lack of awareness of their memory deficit or the inaccuracy of their statements; they are not intentionally deceiving. Underlying mechanisms often include an inability to monitor responses, withhold answers, or provide self-corrections. Theories also suggest temporal context confusion (mistaking past events for present reality), deficient strategic retrieval processes, and source monitoring impairments (difficulty distinguishing real vs imagined events). The content of confabulations often exhibits an emotional bias, frequently being more pleasant or "wishful" than reality, reflecting self-enhancement motives. However, negative or paranoid themes can also occur. While confabulation tends to resolve spontaneously as amnesia improves, interventions focusing on developing awareness can be effective in management and reducing distress
In case you would like to read more here is The Entire Behavioural Science Reading List on Amazon