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 Experiment Videos

Regularity, exposure time and perception of numerosity.

S Alam, R Luccio, F Vardabasso

    Perceptual and Motor Skills
    |October 1, 1986
    PubMed
    Summary

    This study found that regular dot patterns are overestimated when compared, but not when estimated individually. Increased exposure duration generally led to overestimation, supporting distinct cognitive processes for comparison versus estimation.

    Related Concept Videos

    You might also read

    Related Articles

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

    Sort by
    Same author

    Real-world patterns of treatment and response in metastatic renal cell carcinoma: a multicentre UK-wide review with UK Renal Oncology Collaborative (UK ROC).

    ESMO real world data and digital oncology·2026
    Same author

    Evaluation and development of prediction models for enteric methane emissions from cattle in India.

    Journal of dairy science·2026
    Same author

    Vitamin D and hypertension in the elderly; closer to implementation!

    American heart journal plus : cardiology research and practice·2025
    Same author

    Immunization with germ line-targeting SOSIP trimers elicits broadly neutralizing antibody precursors in infant macaques.

    Science immunology·2024
    Same author

    Temporal evolution of electron cloud in a cylindrical Penning trap at room temperature.

    The Review of scientific instruments·2024
    Same author

    Status of Serum Calcium in Patients with Chronic Obstructive Pulmonary Disease.

    Mymensingh medical journal : MMJ·2024

    Area of Science:

    • Cognitive psychology
    • Visual perception
    • Numerical cognition

    Background:

    • Apparent numerosity perception is crucial for understanding how humans process visual information.
    • Distinguishing between comparing and estimating quantities is fundamental in cognitive research.

    Purpose of the Study:

    • To investigate the influence of dot pattern regularity and exposure duration on apparent numerosity perception.
    • To differentiate the cognitive processes underlying quantity comparison versus estimation.

    Main Methods:

    • Two experiments were conducted using regular and irregular dot patterns.
    • Experiment 1 involved comparing apparent numerosity with varying exposure times (160 vs. 2000 ms).
    • Experiment 2 required subjects to estimate numerosity of patterns presented individually.

    Main Results:

    • Regular dot patterns were relatively overestimated in the comparison task (Experiment 1).
    • This overestimation effect was not observed in the estimation task (Experiment 2).
    • A general trend of overestimation increased with longer exposure durations.

    Conclusions:

    • The findings support a dual-process hypothesis for numerosity perception.
    • Separate cognitive mechanisms likely underlie quantity comparison and estimation tasks.
    • Exposure duration significantly impacts perceived numerosity, particularly in comparison tasks.

    Related Experiment Videos