SCIENCE MONDAY 9 November 2026 Measuring brain-signal complexity helps identify alterations associated with mild cognitive impairment and Alzheimer’s disease This study investigated whether the complexity of brain electrical signals, recorded using electroencephalography, could help distinguish healthy individuals, people with mild cognitive impairment, and patients with Alzheimer’s disease. The results revealed a progressive alteration in brain-signal complexity, from healthy individuals to patients with Alzheimer’s disease. This measure represents a promising tool for investigating brain changes associated with cognitive decline. Read the full article at the following link: https://alz-journals.onlinelibrary.wiley.com/doi/full/10.1002/trc2.70284