Development of a smartphone screening test for preclinical Alzheimer’s disease and validation across the dementia continuum

作者：Jane Alty, Lynette R. Goldberg, Eddy Roccati, Katherine Lawler, Quan Bai, Guan Huang, Aidan Bindoff, Renjie Li, Xinyi Wang, Rebecca J. St George, Kaylee Rudd, Larissa Bartlett, Jessica M. Collins, Mimieveshiofuo Aiyede, Nadeeshani Fernando, Anju Bhagwat, Julia Giffard, Katharine Salmon, Scott A. McDonald, Anna E. King, James C. Vickers · 发表于：BMC Neurology · 年份：2024 · DOI：10.1186/s12883-024-03609-z · 被引用次数：15 · 研究领域：Dementia and Cognitive Impairment Research、Alzheimer's disease research and treatments、Dysphagia Assessment and Management

BACKGROUND: Dementia prevalence is predicted to triple to 152 million globally by 2050. Alzheimer's disease (AD) constitutes 70% of cases. There is an urgent need to identify individuals with preclinical AD, a 10-20-year period of progressive brain pathology without noticeable cognitive symptoms, for targeted risk reduction. Current tests of AD pathology are either too invasive, specialised or expensive for population-level assessments. Cognitive tests are normal in preclinical AD. Emerging evidence demonstrates that movement analysis is sensitive to AD across the disease continuum, including preclinical AD. Our new smartphone test, TapTalk, combines analysis of hand and speech-like movements to detect AD risk. This study aims to [1] determine which combinations of hand-speech movement data most accurately predict preclinical AD [2], determine usability, reliability, and validity of TapTalk in cognitively asymptomatic older adults and [3], prospectively validate TapTalk in older adults who have cognitive symptoms against cognitive tests and clinical diagnoses of Mild Cognitive Impairment and AD dementia. METHODS: Aim 1 will be addressed in a cross-sectional study of at least 500 cognitively asymptomatic older adults who will complete computerised tests comprising measures of hand motor control (finger tapping) and oro-motor control (syllabic diadochokinesis). So far, 1382 adults, mean (SD) age 66.20 (7.65) years, range 50-92 (72.07% female) have been recruited. Motor measures...