Evidence map›Paper›PMID 27178862›Full record

ArticleClinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology2016

ERP C250 shows the elderly (cognitively normal, Alzheimer's disease) store more stimuli in short-term memory than Young Adults do.

Robert M Chapman, Margaret N Gardner, Mark Mapstone, Rafael Klorman, Anton P Porsteinsson, Haley M Dupree, Inga M Antonsdottir, Lily Kamalyan

Open access · greenAbstract read
In one paragraph

Article in Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
0.2field-weighted citation impact, top 47% 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

4 citing papers in PubMed, 1 synthesis or guideline pooled it, 8 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Temporospatial components of brain ERPs as biomarkers for Alzheimer's disease.Alzheimer's & dementia (Amsterdam, Netherlands) · 2018
    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

8 authors at 1 institution in 1 country.

Robert M ChapmanDepartment of Brain and Cognitive Sciences and Center for Visual Science at the University of Rochester, Rochester, NY 14627, United States. Electronic address: rmc@cvs.rochester.edu.
Margaret N GardnerDepartment of Brain and Cognitive Sciences and Center for Visual Science at the University of Rochester, Rochester, NY 14627, United States.
Mark MapstoneDepartment of Neurology, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, United States.
Rafael KlormanDepartment of Clinical and Social Sciences in Psychology at the University of Rochester, Rochester, NY 14627, United States.
Anton P PorsteinssonDepartment of Psychiatry, University of Rochester School of Medicine and Dentistry, Rochester, NY 14642, United States.
Haley M DupreeDepartment of Brain and Cognitive Sciences and Center for Visual Science at the University of Rochester, Rochester, NY 14627, United States.
Inga M AntonsdottirDepartment of Brain and Cognitive Sciences and Center for Visual Science at the University of Rochester, Rochester, NY 14627, United States.
Lily KamalyanDepartment of Brain and Cognitive Sciences and Center for Visual Science at the University of Rochester, Rochester, NY 14627, United States.
University of Rochester · US

Funding

VISUAL SCIENCE RESEARCH CTR SUPPORTP30EY001319 · NEI · UNIVERSITY OF ROCHESTER · PI Susana Marcos · 1985 to 2026
$17.5M
AD Pilot Clinical Trials: Spatiotemporal Brain ERP MeasuresR01AG041313 · NIA · UNIVERSITY OF ROCHESTER · PI CHAPMAN, ROBERT M · 2012 to 2016
$1.6M
Cognitive Brain Activity: Aging and DementiaR01AG018880 · NIA · UNIVERSITY OF ROCHESTER · PI CHAPMAN, ROBERT M · 2003 to 2007
$1.4M
NEI NIH HHS P30 EY001319NIA NIH HHS R01 AG018880NIA NIH HHS R01 AG041313
6 · The paper itself

Abstract

objectiveTo determine how aging and dementia affect the brain's initial storing of task-relevant and irrelevant information in short-term memory.

methodsWe used brain Event-Related Potentials (ERPs) to measure short-term memory storage (ERP component C250) in 36 Young Adults, 36 Normal Elderly, and 36 early-stage AD subjects. Participants performed the Number-Letter task, a cognitive paradigm requiring memory storage of a first relevant stimulus to compare it with a second stimulus.

resultsIn Young Adults, C250 was more positive for the first task-relevant stimulus compared to all other stimuli. C250 in Normal Elderly and AD subjects was roughly the same to relevant and irrelevant stimuli in Intratrial Parts 1-3 but not 4. The AD group had lower C250 to relevant stimuli in part 1.

conclusionsBoth normal aging and dementia cause less differentiation of relevant from irrelevant information in initial storage. There was a large aging effect involving differences in the pattern of C250 responses of the Young Adult versus the Normal Elderly/AD groups. Also, a potential dementia effect was obtained. SIGNIFICANCE: C250 is a candidate tool for measuring short-term memory performance on a biological level, as well as a potential marker for memory changes due to normal aging and dementia.

Indexed as

Evoked PotentialsMemory, Short-TermAdultAgedAgingAlzheimer DiseaseFemaleHumansMaleAlzheimer’s disease (AD)ElectrophysiologyEvent-Related Potentials (ERP)Principal Components Analysis (PCA)Short-latency ERP component C250Short-term memory

Identifiers

PMID27178862
PMCPMC4959798
OpenAlexW2296982188

What OpenQuestion holds

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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.