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May 18, 2026Dementia and Geriatric Cognitive Disorders

Utility of Fox and Reverse Fox Finger Imitation Tasks for Screening Cognitive Impairment in Older Adults: A Neuroimaging Study

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Authors

SMShinichiro MaeshimaKSKeita SakuraiAOAiko Osawa

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Overview

Randomized trial evaluates cognitive impairment screening in older adults using imitation tasks, suggesting clinical utility.

Key Points

  • This study evaluates the fox and reverse fox finger imitation tasks for detecting cognitive impairment in older adults.
  • 132 older adults classified into cognitively normal, mild cognitive impairment, and dementia groups.
  • Participants completed finger imitation tasks with performance compared across groups.
  • Voxel-based morphometry identified brain atrophy associated with task performance.
  • The reverse fox finger task had sensitivity of 88.5% for dementia and 79.1% for MCI.
  • The fox finger task showed lower sensitivity (36.1% for dementia, 13.9% for MCI) but 100% specificity.
  • Task failures correlated with atrophy in specific brain regions, predicting performance.

Cite This Study

Maeshima et al. (2026) studied this question.

synapsesocial.com/papers/6a0aaccf5ba8ef6d83b70378https://doi.org/10.1159/000552423
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