Evidence map›Paper›PMID 28697672›Full record

ArticleCognitive neuroscience2017

Projectors, associators, visual imagery, and the time course of visual processing in grapheme-color synesthesia.

Ben D Amsel, Marta Kutas, Seana Coulson

Abstract read
In one paragraph

Article in Cognitive neuroscience, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

5 citing papers in PubMed.

  1. Article
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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

3 authors.

Ben D Amsela Department of Cognitive Science , University of California , San Diego , CA , USA.ORCID 0000-0001-7286-3153
Marta Kutasa Department of Cognitive Science , University of California , San Diego , CA , USA.
Seana Coulsona Department of Cognitive Science , University of California , San Diego , CA , USA.ORCID 0000-0003-1246-9394

Funding

ELECTROPHYSIOLOGY OF LINGUISTIC PROCESSINGR01HD022614 · NICHD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KUTAS, MARTA · 1987 to 2020
$9.3M
NICHD NIH HHS R01 HD022614
6 · The paper itself

Abstract

In grapheme-color synesthesia, seeing particular letters or numbers evokes the experience of specific colors. We investigate the brain's real-time processing of words in this population by recording event-related brain potentials (ERPs) from 15 grapheme-color synesthetes and 15 controls as they judged the validity of word pairs ('yellow banana' vs. 'blue banana') presented under high and low visual contrast. Low contrast words elicited delayed P1/N170 visual ERP components in both groups, relative to high contrast. When color concepts were conveyed to synesthetes by individually tailored achromatic grapheme strings ('55555 banana'), visual contrast effects were like those in color words: P1/N170 components were delayed but unchanged in amplitude. When controls saw equivalent colored grapheme strings, visual contrast modulated P1/N170 amplitude but not latency. Color induction in synesthetes thus differs from color perception in controls. Independent from experimental effects, all orthographic stimuli elicited larger N170 and P2 in synesthetes than controls. While P2 (150-250ms) enhancement was similar in all synesthetes, N170 (130-210ms) amplitude varied with individual differences in synesthesia and visual imagery. Results suggest immediate cross-activation in visual areas processing color and shape is most pronounced in so-called projector synesthetes whose concurrent colors are experienced as originating in external space.

Indexed as

BrainCase-Control StudiesColor PerceptionEvoked Potentials, VisualFemaleHumansIndividualityMalePerceptual DisordersPhotic StimulationSynesthesiaYoung AdultassociatorsColorevent-related potentialsimageryprojectorssynesthesia

Identifiers

PMID28697672
PMCPMC6559728

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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.