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Brain imaging uncovers a shared memory network linked to mild cognitive impairment

Imaging study uncovers a memory network linked to mild cognitive impairment
Workflow of individual weighted key atrophy network mapping. Credit: Huang et al. (Translational Psychiatry, 2026).

As they age, many individuals can struggle to remember recent events or what they meant to say next during a conversation, while also frequently losing or misplacing objects. In some cases, cognitive tests detect these memory impairments. In others, people notice and report a decline even though their test scores remain within the normal range.

The term mild cognitive impairment (MCI) refers to measurable difficulties with memory or other thinking skills in people who remain largely independent in daily life. Subjective cognitive decline (SCD), on the other hand, is a perceived decline despite normal performance on standard cognitive tests...

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