Evidence map›Paper›PMID 25562828›Full record

ArticleNeuroImage2015

A critical role of the human hippocampus in an electrophysiological measure of implicit memory.

Richard James Addante

Open access · greenAbstract read
In one paragraph

Article in NeuroImage, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.8field-weighted citation impact, top 16% 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

20 citing papers in PubMed, 49 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. The Hippocampus Represents Information about Movements in Their Temporal Position in a Learned Motor Sequence.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Neural correlates of the Dunning-Kruger effect.The European journal of neuroscience · 2021
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

1 author at 1 institution in 1 country.

Richard James AddanteUniversity of Texas at Dallas, School of Behavioral and Brain Sciences, Richardson, TX 75080, USA; University of California, Davis, Center for Neuroscience, Davis, CA 95616, USA. Electronic address: Richard.Addante@UTDallas.edu.
University of California, Davis · US

Funding

MINORITY RESEARCH TRAINING IN NEUROSCIENCET32MH018882 · NIMH · AMERICAN PSYCHOLOGICAL ASSOCIATION · PI MARTINEZ, JOSEPH L. · 1987 to 2009
$8.7M
FUNCTIONAL PROPERTIES OF RECOGNITION MEMORYR01MH059352 · NIMH · UNIVERSITY OF CALIFORNIA DAVIS · PI YONELINAS, ANDREW P · 1999 to 2014
$3.9M
Fractionating Prefrontal Contributions to MemoryR01MH068721 · NIMH · UNIVERSITY OF CALIFORNIA DAVIS · PI RANGANATH, CHARAN · 2005 to 2014
$3.1M
NIMH NIH HHS R01 MH059352NIMH NIH HHS R01 MH068721NIMH NIH HHS R01 MH59352-01NIMH NIH HHS T32 MH018882NIMH NIH HHS T32MH18882-22
6 · The paper itself

Abstract

The hippocampus has traditionally been thought to be critical for conscious explicit memory but not necessary for unconscious implicit memory processing. In a recent study of a group of mild amnesia patients with evidence of MTL damage limited to the hippocampus, subjects were tested on a direct test of item recognition confidence while electroencephalogram (EEG) was acquired, and revealed intact measures of explicit memory from 400 to 600 ms (mid-frontal old-new effect, FN400). The current investigation re-analyzed this data to study event-related potentials (ERPs) of implicit memory, using a recently developed procedure that eliminated declarative memory differences. Prior ERP findings from this technique were first replicated in two independent matched control groups, which exhibited reliable implicit memory effects in posterior scalp regions from 400 to 600 ms, which were topographically dissociated from the explicit memory effects of familiarity. However, patients were found to be dramatically impaired in implicit memory effects relative to control subjects, as quantified by a reliable condition × group interaction. Several control analyses were conducted to consider alternative factors that could account for the results, including outliers, sample size, age, or contamination by explicit memory, and each of these factors was systematically ruled out. Results suggest that the hippocampus plays a fundamental role in aspects of memory processing that are beyond conscious awareness. The current findings therefore indicate that both memory systems of implicit and explicit memory may rely upon the same neural structures - but function in different physiological ways.

Indexed as

AdultAmnesiaCerebral CortexElectroencephalographyElectrophysiological PhenomenaEvoked PotentialsFemaleHippocampusHumansMaleMiddle AgedRecognition, PsychologyYoung Adult

Identifiers

PMID25562828
PMCPMC4340755
OpenAlexW2064006797

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.