Evidence map›Paper›PMID 31148578›Full record

ArticleScientific reports2019

Impaired memory-guided attention in asymptomatic APOE4 carriers.

Jacqueline Zimmermann, Claude Alain, Chris Butler

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.2field-weighted citation impact, top 22% 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

12 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Article
  3. Perceptual discrimination of complex objects: Apolipoprotein E e4 gene-dose effects in mid-life.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
    Article
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  10. Review
  11. A profile of brain reserve in adults at genetic risk of Alzheimer's disease.Alzheimer's & dementia (Amsterdam, Netherlands) · 2021
    Article
  12. 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

3 authors at 2 institutions in 2 countries.

Jacqueline ZimmermannDepartment of Psychology, University of Toronto M5S 3G3 and Rotman Research Institute, Baycrest Centre, M6A 2E1, Toronto, Canada. jacqueline.zimmermann@mail.utoronto.ca.
Claude AlainDepartment of Psychology, University of Toronto M5S 3G3 and Rotman Research Institute, Baycrest Centre, M6A 2E1, Toronto, Canada.
Chris ButlerNuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, OX3 9DU, Oxford, UK.ORCID http://orcid.org/0000-0002-7502-9284
University of Toronto · CAJohn Radcliffe Hospital · GB

Funding

Department of HealthMedical Research Council MR/K010395/1
6 · The paper itself

Abstract

Attention and memory may be impaired in individuals at-risk for Alzheimer's disease (AD), though standard cognitive assessments typically study the two in parallel. In reality, attention and memory interact to facilitate information processing, and thus a more integrative approach is required. Here, we used a novel auditory paradigm to assess how long-term memory for auditory scenes facilitates detection of an auditory target in asymptomatic carriers of Apolipoprotein E4 (APOE4), the principle risk gene for late-onset AD. We tested 60 healthy middle-aged adults with varying doses of APOE4 - 20 APOE4 homozygotes (E4/E4), 20 heterozygotes (E3/E4) and 20 non-carriers (E3/E3) - to determine effect on memory-guided attention. While explicit memory was unaffected by genotype, APOE4 dose significantly impaired memory-guided attention. A relationship between explicit memory and memory-guided attention was observed in non-carriers, but this correlation was not significant in E3/E4 and E4/E4 carriers, suggesting that APOE4 carriers rely less on explicit memory to facilitate attention. Since memory-guided attention declined with age in APOE4 homozygotes, this impairment may reflect early disease rather than being a life-long trait. In sum, asymptomatic individuals at increased genetic risk of AD show an age-dependent decline in attention-memory interaction when memory alone is not impaired.

Indexed as

AttentionHeterozygoteMemory, Long-TermAdultAlzheimer DiseaseApolipoprotein E3Apolipoprotein E4Apolipoproteins ECognitionFemaleGenotypeHealthy VolunteersHomozygoteHumansLearningMaleApoE protein, humanApolipoprotein E3Apolipoprotein E4Apolipoproteins E

Identifiers

PMID31148578
PMCPMC6544654
OpenAlexW2946928334

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.