A quiet shift in memory can begin long before a diagnosis of dementia. These early changes often pass unnoticed, even as the brain slowly alters. New research suggests that simple digital tools, used regularly at home, may detect these changes far sooner than traditional methods. Researchers say this approach could reshape how conditions like Alzheimer’s disease are studied and monitored, especially in their earliest stages. The Challenge Of Detecting Early Decline Cognitive decline often unfolds slowly. People with mild cognitive impairment, or MCI, may still manage daily life with little difficulty. Yet their memory and thinking abilities show measurable changes. Study design. (CREDIT: npj Digital Medicine) Doctors have long relied on in-person assessments to track these changes. These tests require scheduled visits, supervision, and standardized tasks. Because they take time and resources, they are usually done once or twice a year. That gap creates a problem. Subtle changes that happen between visits may go unnoticed. Dr. David Berron, a researcher involved in the study, explains the limitation clearly. “Conventional methods for assessing cognitive performance are …