Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Learning Disabilities01:25

Learning Disabilities

487
Learning disabilities are cognitive disorders caused by neurological impairments that affect cognitive functions like language and reading, without indicating overall intellectual or developmental challenges. These disabilities differ from global intellectual or developmental disabilities as they are limited to distinct cognitive functions. Common learning disabilities include dysgraphia, dyslexia, and dyscalculia, each of which impacts unique aspects of learning.
Dyslexia
Dyslexia is a...
487
Visual Agnosia01:12

Visual Agnosia

719
Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round...
719

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Non-Invasive Measurement of Cortical Plasticity in Brain Tumour Surgery: A Monocentric Experience of nTMS Mapping and Definition of Cognitive Reshaping Based on Tumour Histological Grade.

Cancers·2026
Same author

Pathways for learning arithmetic: Distinct dynamics for associative and procedural acquisition.

Cognition·2026
Same author

Proposal of Brain Plasticity Index Based on Navigated Transcranial Magnetic Stimulation: Metric of Functional Displacement for Language Function.

World neurosurgery·2025
Same author

Brain Activity During Repetitive Cognitive Load in Young Adults: a Pilot Study.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2025
Same author

A non-monotonic code for event probability in the human brain.

Nature communications·2025
Same author

Stronger reliance on visual perceptual history in individuals with higher math anxiety.

BMC biology·2025
Same journal

Analysis of human visual experience data.

Journal of vision·2026
Same journal

Pyramid-based Bayesian modeling for high-resolution behavioral analysis.

Journal of vision·2026
Same journal

Sensation without perception: The white whale effect and perceptual blindness in autonomous vehicles.

Journal of vision·2026
Same journal

Gaze behavior during closed-captioned movie viewing adapts to absent audio through more frequent switching between text and scene.

Journal of vision·2026
Same journal

In pursuit of saccade awareness: Limited volitional control and minimal conscious access to catch-up saccades during smooth pursuit eye movements.

Journal of vision·2026
Same journal

Dissociable effects of element-lifetime and stimulus-duration on local and global motion processing: An equivalent noise study.

Journal of vision·2026
See all related articles

Related Experiment Video

Updated: Dec 12, 2025

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA
10:58

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA

Published on: August 28, 2021

4.9K

Excessive visual crowding effects in developmental dyscalculia.

Elisa Castaldi1,2,2, Marco Turi1, Sahawanatou Gassama1

  • 1,.

Journal of Vision
|August 7, 2020
PubMed
Summary
This summary is machine-generated.

Individuals with developmental dyscalculia (DD) experience heightened visual crowding, impacting number perception. This visual crowding is independent of reading or attention issues and correlates with mathematical difficulties.

More Related Videos

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

768
Eye Tracking Young Children with Autism
09:03

Eye Tracking Young Children with Autism

Published on: March 27, 2012

46.3K

Related Experiment Videos

Last Updated: Dec 12, 2025

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA
10:58

Multimedia Battery for Assessment of Cognitive and Basic Skills in Mathematics BM-PROMA

Published on: August 28, 2021

4.9K
Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

768
Eye Tracking Young Children with Autism
09:03

Eye Tracking Young Children with Autism

Published on: March 27, 2012

46.3K

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Developmental Disorders

Background:

  • Visual crowding impairs object identification amidst similar items.
  • Crowding mechanisms are crucial for numerical perception and abstract skill acquisition.
  • Developmental dyscalculia (DD) involves significant difficulties with basic numerical concepts.

Purpose of the Study:

  • To investigate excessive spatial crowding in adults with developmental dyscalculia (DD).
  • To determine if crowding effects in DD are independent of reading and attentional deficits.
  • To explore the relationship between visual crowding and mathematical abilities in DD.

Main Methods:

  • Adults with DD and control groups performed orientation discrimination tasks.
  • Stimuli were presented in isolation and under spatial crowding conditions.
  • Orientation discrimination thresholds and reaction times were measured.

Main Results:

  • Individuals with DD showed significantly higher orientation discrimination thresholds under crowding compared to controls.
  • This crowding effect persisted even with increased target-flanker distances in the DD group.
  • The severity of spatial crowding correlated with mathematical impairments, independent of reading and attention skills.

Conclusions:

  • Excessive visual crowding may be a characteristic feature of developmental dyscalculia.
  • This crowding deficit appears to be independent of other common neurodevelopmental difficulties associated with DD.
  • Visual crowding may underlie numerical perception deficits in individuals with DD.