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Researchers Release Dallas Lifespan Brain Study Dataset to Illuminate Cognitive Aging

The open repository empowers global researchers to study individualized brain aging trajectories, opening new avenues for Alzheimer’s disease research.

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Wig said the study was innovative in its inclusion of middle-aged participants, early adoption of brain scans that allowed measurement of brain networks and its gathering of PET data from a cognitively normal sample. Credit: Neuroscience News

Overview

  • The DLBS collected neuroimaging and cognitive data from 464 adults aged 21 to 89 at three intervals over ten years, yielding a rich longitudinal resource for brain aging studies.
  • Funded by a National Institute on Aging MERIT Award, the study prioritized sustained data collection without early publication pressures and maintained high participant retention across three waves.
  • Recent DLBS findings reveal progressive breakdown of brain networks throughout adulthood and unexpectedly high amyloid protein levels in cognitively healthy individuals.
  • The latest data wave incorporates tau imaging, supporting evidence that amyloid accumulation can precipitate tau tangles associated with Alzheimer’s pathology.
  • The publicly available dataset includes MRI and PET scans, neuropsychological assessments and health surveys to facilitate personalized analyses of aging trajectories.