Evidence map›Paper›PMID 29704287›Full record

ArticleHippocampus2018

Subliminal encoding and flexible retrieval of objects in scenes.

Sergej Wuethrich, Deborah E Hannula, Fred W Mast, Katharina Henke

Abstract read
In one paragraph

Article in Hippocampus, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

  1. Article
  2. Article
  3. VR for Cognition and Memory.Current topics in behavioral neurosciences · 2023
    Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. 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

4 authors.

Sergej WuethrichInstitute of Psychology, University of Bern, Fabrikstrasse 8, Bern 3012, Switzerland.
Deborah E HannulaDepartment of Psychology, University of Wisconsin-Milwaukee, 224 Garland Hall, 2441 Hartford Ave, Milwaukee, Wisconsin 53211.
Fred W MastInstitute of Psychology, University of Bern, Fabrikstrasse 8, Bern 3012, Switzerland.
Katharina HenkeInstitute of Psychology, University of Bern, Fabrikstrasse 8, Bern 3012, Switzerland.ORCID 0000-0002-7895-044X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Our episodic memory stores what happened when and where in life. Episodic memory requires the rapid formation and flexible retrieval of where things are located in space. Consciousness of the encoding scene is considered crucial for episodic memory formation. Here, we question the necessity of consciousness and hypothesize that humans can form unconscious episodic memories. Participants were presented with subliminal scenes, that is, scenes invisible to the conscious mind. The scenes displayed objects at certain locations for participants to form unconscious object-in-space memories. Later, the same scenes were presented supraliminally, that is, visibly, for retrieval testing. Scenes were presented absent the objects and rotated by 90°-270° in perspective to assess the representational flexibility of unconsciously formed memories. During the test phase, participants performed a forced-choice task that required them to place an object in one of two highlighted scene locations and their eye movements were recorded. Evaluation of the eye tracking data revealed that participants remembered object locations unconsciously, irrespective of changes in viewing perspective. This effect of gaze was related to correct placements of objects in scenes, and an intuitive decision style was necessary for unconscious memories to influence intentional behavior to a significant degree. We conclude that conscious perception is not mandatory for spatial episodic memory formation.

Indexed as

Memory, EpisodicMental RecallPattern Recognition, VisualSubliminal StimulationAwarenessChoice BehaviorEye Movement MeasurementsEye MovementsFemaleHumansMalePsychological TestsRotationYoung Adultallocentricconsciousnessepisodic memorylong-term retentionunconscious

Identifiers

PMID29704287
PMCPMC6282531

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.