Evidence map›Paper›PMID 41777548›Full record

Articlei-Perception

The bookend effect.

Anna Riga, Stuart Anstis, Patrick Cavanagh, Ian M Thornton

Abstract read
In one paragraph

Article in i-Perception. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Anna RigaUniversity of Malta, Malta.ORCID https://orcid.org/0009-0000-2091-5310
Stuart AnstisUniversity of California San Diego, United States.ORCID https://orcid.org/0000-0001-8347-9130
Patrick CavanaghGlendon College, Canada.ORCID https://orcid.org/0000-0003-3164-2340
Ian M ThorntonUniversity of Malta, Malta.ORCID https://orcid.org/0000-0001-6328-3536

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The principle of "common fate" tells us that objects that move together, group together. But what happens when physical paths are shared and illusory paths differ? Here, horizontally aligned targets move up and down over columns containing static, oblique gratings. If all columns share the same orientation, the target group appears to drift in that direction, as per the furrow illusion. However, when the two outer "bookend" targets have a different background orientation from the inner "book" targets, group motion is entirely captured by the bookends. This occurs despite the inner books having discriminable features and recoverable relative motion. What is missing is any sense of their opposing illusory path. We suggest that spatial proximity and common vertical motion help create a single grouped object representation. Since rigid objects tend not to move in two directions at once, the salient bookends dominate our perception of where the group is going.

Indexed as

crowdingframe effectfurrow illusiongroupingperceptual organizationvisual illusions

Identifiers

PMID41777548
PMCPMC12950864

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.