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

Gestalt Principles of Perception01:21

Gestalt Principles of Perception

397
Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
397
Stereoisomerism of Cyclic Compounds02:33

Stereoisomerism of Cyclic Compounds

9.1K
In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular symmetry and stereoisomerism of cyclic compounds. 1,2-Dimethylcyclohexane is used as a case study to evaluate the possible number of stereoisomers. Here, given the multiple (n = 2) chiral centers, there are 2n = 4 possible configurations that lack a plane of symmetry, as the ring skeleton exists in a non-planar chair conformation. In addition,...
9.1K
Properties of Fourier series II01:21

Properties of Fourier series II

247
Time scaling of signals is a crucial concept in signal processing that affects the Fourier series representation without altering its coefficients. The process modifies the fundamental frequency, thereby changing how the series represents the signal over time. This principle is essential in various applications, including audio and image processing, where signal manipulation is frequent. Understanding function symmetries is fundamental to simplifying the Fourier series.
A function f(t) is...
247
Gauss's Law: Planar Symmetry01:27

Gauss's Law: Planar Symmetry

8.2K
A planar symmetry of charge density is obtained when charges are uniformly spread over a large flat surface. In planar symmetry, all points in a plane parallel to the plane of charge are identical with respect to the charges. Suppose the plane of the charge distribution is the xy-plane, and the electric field at a space point P with coordinates (x, y, z) is to be determined. Since the charge density is the same at all (x, y) - coordinates in the z = 0 plane, by symmetry, the electric field at P...
8.2K
Gauss's Law: Cylindrical Symmetry01:20

Gauss's Law: Cylindrical Symmetry

7.9K
A charge distribution has cylindrical symmetry if the charge density depends only upon the distance from the axis of the cylinder and does not vary along the axis or with the direction about the axis. In other words, if a system varies if it is rotated around the axis or shifted along the axis, it does not have cylindrical symmetry. In real systems, we do not have infinite cylinders; however, if the cylindrical object is considerably longer than the radius from it that we are interested in,...
7.9K
Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule01:10

Interpreting ¹H NMR Signal Splitting: The (n + 1) Rule

1.4K
In the AX proton spin system, proton A can sense the two spin states of a coupled proton X, resulting in a doublet NMR signal with two peaks of equal (1:1) intensity. When proton A is coupled to two equivalent protons (AX2 spin system), the spin states of each X can be aligned with or against the external field, creating three possible scenarios. This results in a 1:2:1  triplet signal, where the central peak corresponds to the chemical shift of A and is twice as large or intense as the...
1.4K

You might also read

Related Articles

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

Sort by
Same author

Sensorimotor numerosity uniquely supports arithmetic development in children.

i-Perception·2026
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

Saccade-synchronized alpha rhythms predict strength of memory trace of stimulus orientation.

BMC biology·2026
Same author

Human vision maintains a rich representation of objects moving behind an occluder.

Current biology : CB·2026
Same author

Color induction in anomalous color vision.

Vision research·2026
Same author

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

Cognition·2026

Related Experiment Video

Updated: Aug 31, 2025

Generating Strictly Controlled Stimuli for Figure Recognition Experiments
05:39

Generating Strictly Controlled Stimuli for Figure Recognition Experiments

Published on: March 18, 2019

5.3K

Symmetry as a grouping cue for numerosity perception.

Paula A Maldonado Moscoso1, Giovanni Anobile2, David C Burr2,1

  • 1Institute of Neuroscience, National Research Council, Pisa, Italy.

Scientific Reports
|August 24, 2022
PubMed
Summary

Symmetry can trick our brains into underestimating object counts, especially for fewer items. This effect lessens with more objects and is linked to autistic traits and how we group visual elements.

More Related Videos

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
08:12

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments

Published on: March 1, 2022

2.6K
The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
05:15

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition

Published on: February 19, 2018

10.9K

Related Experiment Videos

Last Updated: Aug 31, 2025

Generating Strictly Controlled Stimuli for Figure Recognition Experiments
05:39

Generating Strictly Controlled Stimuli for Figure Recognition Experiments

Published on: March 18, 2019

5.3K
A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
08:12

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments

Published on: March 1, 2022

2.6K
The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition
05:15

The Spatial Memory Game: Testing the Relationship Between Spatial Language, Object Knowledge, and Spatial Cognition

Published on: February 19, 2018

10.9K

Area of Science:

  • Cognitive Psychology
  • Perception
  • Neuroscience

Background:

  • Accurate object counting (numerosity estimation) relies on segmenting individual elements.
  • Perceptual grouping principles, such as symmetry, influence how elements are processed.
  • Previous research suggests autistic traits correlate with differences in perceptual grouping.

Purpose of the Study:

  • To investigate the impact of visual symmetry on the rapid estimation of object numerosity.
  • To determine how different levels and axes of symmetry affect perceived object counts.
  • To explore the relationship between symmetry-induced numerosity underestimation and autistic personality traits.

Main Methods:

  • Participants estimated the numerosity of symmetric and asymmetric visual arrays.
  • Arrays varied in number of objects and symmetry (single vs. double axis).
  • Autistic personality traits were assessed and correlated with numerosity judgments.

Main Results:

  • Symmetric arrays were significantly underestimated at lower numerosities compared to asymmetric ones.
  • This underestimation effect diminished as the number of objects increased.
  • Double symmetry further reduced perceived numerosity; underestimation magnitude correlated inversely with autistic traits.

Conclusions:

  • Visual symmetry acts as a powerful grouping cue that can lead to underestimation of object numerosity.
  • The influence of symmetry on numerosity perception is dependent on the quantity of objects.
  • Findings support the role of object segmentation and grouping in numerosity, with implications for understanding autistic perceptual styles.