Evidence map›Paper›PMID 40358086›Full record

ArticleAlzheimer disease and associated disorders

Cortical Thickness Predictors of Performance-Based Functional Task Variability in the Alzheimer Disease Spectrum.

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

Abstract readClinical Study
In one paragraph

Article in Alzheimer disease and associated disorders. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
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

2 citing papers in PubMed.

  1. Article
  2. 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.

Michael Malek-AhmadiBanner Alzheimer Institute.ORCID 0000-0001-9901-3650
Kjera SchackArizona State University, Tempe, AZ.
Kevin DuffOregon Health Sciences University, Layton Aging and Alzheimer Disease Research Center, Portland, OR.
Vincent KoppelmansDepartment of Psychiatry.
Jace B KingDepartment of Radiology and Imaging Sciences, University of Utah, Salt Lake City, UT.
Yi SuBanner Alzheimer Institute.
Sydney Y SchaeferArizona State University, Tempe, AZ.

Funding

Research Education ComponentP30AG066518 · NIA · OREGON HEALTH & SCIENCE UNIVERSITY · PI Allison Lindauer · 2020 to 2026
$28.6M
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
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
Novel metrics of brain dynamics in Alzheimer’s diseaseK01AG075166 · NIA · UTAH STATE HIGHER EDUCATION SYSTEM--UNIVERSITY OF UTAH · PI Jace Bradford King · 2022 to 2026
$651k
NIA NIH HHS K01 AG073578NIA NIH HHS K01 AG075166NIA NIH HHS P30 AG066518NIA NIH HHS P30 AG072980NIA NIH HHS R01 AG055428
6 · The paper itself

Abstract

purposeDetermine whether regional measures of cortical thickness are associated with functional task performance. PATIENTS: One hundred six older adults who were classified as either cognitively unimpaired (CU), mild cognitive impairment (MCI), or Alzheimer disease (AD) completed a performance-based functional task.

methodsThe SD of completion times of 6 consecutive trials within a session of the functional task was used as the primary measure for each participant, reflecting intraindividual variability. Regression tree analysis identified cortical gray matter thickness measures that best predicted intraindividual variability on the functional task.

resultsCortical thickness measures from temporal, parietal, frontal, and occipital regions best predicted intraindividual variability on the task, which are cortical regions associated with learning, executive function, and visuospatial function. Specifically, the fusiform gyrus was featured prominently in these and prior regression tree results, suggesting its possible involvement in this behavioral task.

conclusionThese analyses suggest a mechanistic focus of variability on this functional task, which could serve as an outcome in clinical trials.

Indexed as

Alzheimer DiseaseBrain Cortical ThicknessCerebral CortexCognitive DysfunctionAgedAged, 80 and overFemaleHumansMagnetic Resonance ImagingMaleNeuropsychological TestsTask Performance and Analysiscognitively unimpairedfusiform gyrusmild cognitive impairmentperformance-based measureregression tree

Identifiers

PMID40358086
PMCPMC12831538

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Registered trials

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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.