Neurology

Sleep apnea during REM sleep may amplify vascular contributors to Alzheimer’s disease, a new Perspective article proposes.

Brief speech recordings enabled automated classification of primary progressive aphasia variants in a cross-sectional study.

An 8-year cohort study found unsupervised physical activity was linked to poorer working memory, while screen time was linked to better cognition.

A study of nearly 100,000 people found Parkinson’s disease genetic variants differ widely by ancestry, especially for GBA1 and LRRK2.

A large US study has found that encephalitis is linked to a significantly higher long-term risk of dementia, especially non-infectious and viral cases.

A systematic review found consistent associations between Alzheimer’s biomarkers and motor performance, suggesting gait and mobility changes may emerge before cognitive decline.

Elevated plasma amyloid-β 1-40 was linked to higher delirium risk after cardiac surgery in older patients, a new study found.

A major neuroimaging study of over 23,000 people found new brain regions linked to depression, with no subcortical involvement.