Lucidity in the Deeply Forgetful: A Scoping Review.

Area of Science:

• Neurology
• Gerontology
• Cognitive Science

Background:

• Paradoxical episodes of lucidity and awareness have been reported in patients with severe Alzheimer's disease and related dementias (ADRD).
• These events, though documented, remain poorly understood and warrant further investigation.

Purpose of the Study:

• To conduct a scoping review of the existing literature on lucid episodes in Alzheimer's disease and related dementias (ADRD).
• To identify and synthesize research methodologies for studying these phenomena.

Main Methods:

• A comprehensive search of five databases was performed using relevant keywords.
• Literature was screened for relevance, and a specific inclusion criteria was applied.
• Thirty relevant studies, including perspective papers, case reports, and caregiver surveys, were included.

Main Results:

• The reviewed literature comprised an equal balance of primary and secondary research.
• A diverse range of study types were identified, contributing to a broad overview of the topic.

Conclusions:

• The reviewed papers offer a methodological framework for future research into lucid episodes in ADRD.
• Further research is crucial to understand the mechanisms and implications of these inexplicable events in dementia care.