Evidence map›Paper›PMID 33383478›Full record

ArticleCortex; a journal devoted to the study of the nervous system and behavior2021

Quantifying aphantasia through drawing: Those without visual imagery show deficits in object but not spatial memory.

Wilma A Bainbridge, Zoë Pounder, Alison F Eardley, Chris I Baker

Open access · greenAbstract read
In one paragraph

Article in Cortex; a journal devoted to the study of the nervous system and behavior, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 1 pooled it
8.2field-weighted citation impact, top 2% 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

47 citing papers in PubMed, 1 synthesis or guideline pooled it, 173 citations in OpenAlex.

  1. Pooled it
  2. Value-Driven Crossmodal Spatial Attention: The Role of Perceptual Load.Annals of the New York Academy of Sciences · 2026
    Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. Evaluation of a Visual Cognitive Style in Autism: A Cluster Analysis.Journal of autism and developmental disorders · 2026
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Characterizing internal models of the visual environment.Proceedings. Biological sciences · 2025
    Review
  15. Article
  16. Article
  17. Article
  18. The Neural Underpinnings of Aphantasia: A Case Study of Identical Twins.bioRxiv : the preprint server for biology · 2025
    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

4 authors at 3 institutions in 2 countries.

Wilma A BainbridgeDepartment of Psychology, University of Chicago, Chicago, IL, USA; Laboratory of Brain and Cognition, National Institute of Mental Health, Bethesda, MD, USA. Electronic address: wilma@uchicago.edu.
Zoë PounderDepartment of Psychology, University of Westminster, London, UK. Electronic address: z.pounder@my.westminster.ac.uk.
Alison F EardleyDepartment of Psychology, University of Westminster, London, UK. Electronic address: A.Eardley@westminster.ac.uk.
Chris I BakerLaboratory of Brain and Cognition, National Institute of Mental Health, Bethesda, MD, USA. Electronic address: bakerchris@mail.nih.gov.
University of Westminster · GBNational Institute of Mental Health · USUniversity of Chicago · US

Funding

Object, face, body and scene representations in the human brainZIAMH002909 · NIMH · NATIONAL INSTITUTE OF MENTAL HEALTH · PI BAKER, CHRIS · 2009 to 2025
$25.5M
Intramural NIH HHS Z99 MH999999Intramural NIH HHS ZIA MH002909
6 · The paper itself

Abstract

Congenital aphantasia is a recently characterized variation of experience defined by the inability to form voluntary visual imagery, in individuals who are otherwise high performing. Because of this specific deficit to visual imagery, individuals with aphantasia serve as an ideal group for probing the nature of representations in visual memory, particularly the interplay of object, spatial, and symbolic information. Here, we conducted a large-scale online study of aphantasia and revealed a dissociation in object and spatial content in their memory representations. Sixty-one individuals with aphantasia and matched controls with typical imagery studied real-world scene images, and were asked to draw them from memory, and then later copy them during a matched perceptual condition. Drawings were objectively quantified by 2,795 online scorers for object and spatial details. Aphantasic participants recalled significantly fewer objects than controls, with less color in their drawings, and an increased reliance on verbal scaffolding. However, aphantasic participants showed high spatial accuracy equivalent to controls, and made significantly fewer memory errors. These differences between groups only manifested during recall, with no differences between groups during the matched perceptual condition. This object-specific memory impairment in individuals with aphantasia provides evidence for separate systems in memory that support object versus spatial information. The study also provides an important experimental validation for the existence of aphantasia as a variation in human imagery experience.

Indexed as

ImaginationPerceptual DisordersHumansImagery, PsychotherapyMental RecallSpatial MemoryVisual PerceptionFalse memoryMemory recallMental imageryObject informationSpatial information

Identifiers

PMID33383478
PMCPMC7856239
OpenAlexW3110992931

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.