Evidence map›Paper›PMID 25596483›Full record

ArticleBiological psychology2015

Age-related differences in early novelty processing: using PCA to parse the overlapping anterior P2 and N2 components.

Kirk R Daffner, Brittany R Alperin, Katherine K Mott, Erich S Tusch, Phillip J Holcomb

Abstract read
In one paragraph

Article in Biological psychology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

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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

5 authors.

Kirk R DaffnerCenter for Brain/Mind Medicine, Division of Cognitive and Behavioral Neurology, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, 221 Longwood Avenue, Boston, MA 02115, USA. Electronic address: kdaffner@partners.org.
Brittany R AlperinCenter for Brain/Mind Medicine, Division of Cognitive and Behavioral Neurology, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, 221 Longwood Avenue, Boston, MA 02115, USA.
Katherine K MottCenter for Brain/Mind Medicine, Division of Cognitive and Behavioral Neurology, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, 221 Longwood Avenue, Boston, MA 02115, USA.
Erich S TuschCenter for Brain/Mind Medicine, Division of Cognitive and Behavioral Neurology, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, 221 Longwood Avenue, Boston, MA 02115, USA.
Phillip J HolcombDepartment of Psychology, Tufts University, 490 Boston Avenue, Medford, MA 02155, USA.

Funding

ERP Investigations of Novelty Processing in Different Patterns of Cognitive AgingR01AG017935 · NIA · BRIGHAM AND WOMEN'S HOSPITAL · PI DAFFNER, KIRK R · 2002 to 2012
$4.5M
The Neuro-cognition of Word ComprehensionR37HD025889 · NICHD · TUFTS UNIVERSITY MEDFORD · PI HOLCOMB, PHILLIP J · 2011 to 2020
$3.7M
NIA NIH HHS R01 AG017935NICHD NIH HHS R37 HD025889PHS HHS R01 AGO17935
6 · The paper itself

Abstract

Previous work demonstrated age-associated increases in the anterior P2 and age-related decreases in the anterior N2 in response to novel stimuli. Principal component analysis (PCA) was used to determine if the inverse relationship between these components was due to their temporal and spatial overlap. PCA revealed an early anterior P2, sensitive to task relevance, and a late anterior P2, responsive to novelty, both exhibiting age-related amplitude increases. A PCA factor representing the anterior N2, sensitive to novelty, exhibited age-related amplitude decreases. The late P2 and N2 to novels inversely correlated. Larger late P2 amplitude to novels was associated with better behavioral performance. Age-related differences in the anterior P2 and N2 to novel stimuli likely represent age-associated changes in independent cognitive operations. Enhanced anterior P2 activity (indexing augmentation in motivational salience) may be a compensatory mechanism for diminished anterior N2 activity (indexing reduced ability of older adults to process ambiguous representations).

Indexed as

AdultAgedAged, 80 and overAge FactorsAttentionBrainElectroencephalographyEvoked PotentialsFemaleHumansMaleMiddle AgedPhotic StimulationPrincipal Component AnalysisPsychomotor PerformanceYoung AdultAgingAnterior N2Anterior P2MismatchMotivational salienceNoveltyPCA

Identifiers

PMID25596483
PMCPMC4374636

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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.