Evidence map›Paper›PMID 36639062›Full record

ArticleExperimental gerontology2023

Volumetric regional MRI and neuropsychological predictors of motor task variability in cognitively unimpaired, Mild Cognitive Impairment, and probable Alzheimer's disease older adults.

Michael Malek-Ahmadi, Kevin Duff, Kewei Chen, Yi Su, Jace B King, Vincent Koppelmans, Sydney Y Schaefer

Open access · goldAbstract read
In one paragraph

Article in Experimental gerontology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 12% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Comparing Demographic Effects on Current and Novel Neuropsychological Measures in Older Adults with and without Alzheimer's Disease.Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Alzheimer's disease biomarker burden in primary motor cortices is associated with poorer dexterity performance.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
  9. Article
  10. Article
  11. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 1 country.

Michael Malek-AhmadiBanner Alzheimer's Institute, Phoenix, AZ 85006, United States of America; Department of Biomedical Informatics, University of Arizona College of Medicine-Phoenix, Phoenix, AZ 85006, United States of America.
Kevin DuffCenter for Alzheimer's Care, Imaging, & Research, University of Utah, Salt Lake City, UT 84108, United States of America.
Kewei ChenBanner Alzheimer's Institute, Phoenix, AZ 85006, United States of America.
Yi SuBanner Alzheimer's Institute, Phoenix, AZ 85006, United States of America.
Jace B KingCenter for Alzheimer's Care, Imaging, & Research, University of Utah, Salt Lake City, UT 84108, United States of America.
Vincent KoppelmansDepartment of Psychiatry, University of Utah, Salt Lake City, UT 84108, United States of America.
Sydney Y SchaeferSchool of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ 85287, United States of America. Electronic address: sydney.schaefer@asu.edu.
University of Utah · USBanner Alzheimer’s InstituteAlzheimer's Association · USArizona State University · US

Funding

Utah Center for Clinical and Translational ScienceUL1TR002538 · NCATS · UNIVERSITY OF UTAH · PI HESS, RACHEL, MAJERSIK, JENNIFER JUHL · 2018 to 2022
$26.0M
Research Education ComponentP30AG072980 · NIA · BANNER HEALTH · PI HEATHER Allyson BIMONTE-NELSON · 2021 to 2026
$24.9M
Enriching clinical trials requiring amyloid positivity with practice effectsR01AG055428 · NIA · UNIVERSITY OF UTAH · PI DUFF, KEVIN M, HOFFMAN, JOHN M · 2017 to 2021
$3.6M
Siemens MAGNETOM Prisma 3T MRI scannerS10OD018482 · OD · UNIVERSITY OF UTAH · PI PARKER, DENNIS L · 2015 to 2015
$1.2M
Motor Profiles as Novel Biomarker for Alzheimer’s DiseaseK01AG073578 · NIA · UTAH STATE HIGHER EDUCATION SYSTEM--UNIVERSITY OF UTAH · PI KOPPELMANS, VINCENT · 2021 to 2025
$651k
NCATS NIH HHS UL1 TR002538NIA NIH HHS K01 AG073578NIA NIH HHS P30 AG072980NIA NIH HHS R01 AG055428NIH HHS S10 OD018482
6 · The paper itself

Abstract

introductionThe mechanisms linking motor function to Alzheimer's disease (AD) progression have not been well studied, despite evidence of AD pathology within motor brain regions. Thus, there is a need for new motor measure that is sensitive and specific to AD.

methodsIn a sample of 121 older adults (54 cognitive unimpaired [CU], 35 amnestic Mild Cognitive Impairment [aMCI], and 32 probable mild AD), intrasubject standard deviation (ISD) across six trials of a novel upper-extremity motor task was predicted with volumetric regional gray matter and neuropsychological scores using classification and regression tree (CART) analyses.

resultsBoth gray matter and neuropsychological CART models indicated that motor task ISD (our measure of motor learning) was related to cortical regions and cognitive test scores associated with memory, executive function, and visuospatial skills. CART models also accurately distinguished motor task ISD of MCI and probable mild AD from CU. DISCUSSION: Variability in motor task performance across practice trials may be valuable for understanding preclinical and early-stage AD.

Indexed as

Alzheimer DiseaseCognitive DysfunctionAgedBrainHumansMagnetic Resonance ImagingNeuropsychological TestsGray matterMotor learningNeuropsychological testsRegression tree

Identifiers

PMID36639062
PMCPMC9974847
OpenAlexW4315487939

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.