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

Symmetry01:26

Symmetry

248
The equation of an ellipse centered at the origin defines all points whose distances from the center maintain a constant ratio between the horizontal and vertical axes. This equation results in a smooth, closed curve that extends further along the x-axis than the y-axis, giving it a horizontal orientation. Such an ellipse demonstrates three kinds of symmetry: across the x-axis, across the y-axis, and about the origin. These symmetries are essential in understanding the graph's structure and...
248
Migration00:53

Migration

9.0K
Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
9.0K
Complementation Tests00:49

Complementation Tests

6.3K
A complementation test is a simple cross to identify whether the two mutations are located on the same gene or different genes. It was first performed by Edward Lewis in the 1940s while working on fruit flies. He developed the test to identify the location and arrangement of different mutations on chromosomes.
Organisms heterozygous for different mutations are crossed pairwise in all combinations. If present on different genes, the mutations can complement each other by providing the missing...
6.3K
Prosopagnosia01:24

Prosopagnosia

876
Prosopagnosia, also known as face blindness, is the inability to recognize faces. In severe cases, individuals with prosopagnosia may not recognize close family members, including parents and spouses, by their faces. For instance, someone with prosopagnosia might walk past their child in a crowd, only realizing their mistake upon noticing their child's distinctive backpack or favorite jacket. Prosopagnosia specifically impairs facial recognition, while the recognition of other objects or...
876
Gauss's Law: Planar Symmetry01:27

Gauss's Law: Planar Symmetry

9.7K
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...
9.7K
Properties of Fourier series II01:21

Properties of Fourier series II

630
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...
630

You might also read

Related Articles

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

Sort by
Same author

A Taxonomy of Data Synthesis.

Personality & social psychology bulletin·2026
Same author

KRASG12D drives immunosuppression in lung adenocarcinoma through paracrine signaling.

JCI insight·2025
Same author

Identifying SCS Trial Responders Immediately After Postoperative Programming with ECAP Dose-Controlled Closed-Loop Therapy.

Pain and therapy·2024
Same author

Predicting state level suicide fatalities in the united states with realtime data and machine learning.

Npj mental health research·2024
Same author

WITHDRAWN: Oncogenic KRAS <sup>G12D</sup> extrinsically induces an immunosuppressive microenvironment in lung adenocarcinoma.

bioRxiv : the preprint server for biology·2024
Same author

Modeling Molecular Pathogenesis of Idiopathic Pulmonary Fibrosis-Associated Lung Cancer in Mice.

Molecular cancer research : MCR·2023

Related Experiment Video

Updated: Feb 19, 2026

A Modified Mirror Test as a Visual Guide for the Self-awareness Trait in Wild Antarctica Penguins, Pygoscelis adeliae
04:51

A Modified Mirror Test as a Visual Guide for the Self-awareness Trait in Wild Antarctica Penguins, Pygoscelis adeliae

Published on: July 8, 2025

802

Symmetry recognition by pigeons: Generalized or not?

Juan D Delius1, Julia A M Delius2, Jennifer M Lee1

  • 1Allgemeine Psychologie, Universität Konstanz, Konstanz, Germany.

Plos One
|November 10, 2017
PubMed
Summary

Pigeons can categorize visual symmetry, but earlier studies had issues. New experiments suggest pigeons possess this ability, resolving previous discrepancies in visual pattern recognition research.

More Related Videos

A Method for Investigating Change Blindness in Pigeons Columba Livia
06:14

A Method for Investigating Change Blindness in Pigeons Columba Livia

Published on: September 7, 2018

6.8K
Recording Single Neurons' Action Potentials from Freely Moving Pigeons Across Three Stages of Learning
11:20

Recording Single Neurons' Action Potentials from Freely Moving Pigeons Across Three Stages of Learning

Published on: June 2, 2014

12.5K

Related Experiment Videos

Last Updated: Feb 19, 2026

A Modified Mirror Test as a Visual Guide for the Self-awareness Trait in Wild Antarctica Penguins, Pygoscelis adeliae
04:51

A Modified Mirror Test as a Visual Guide for the Self-awareness Trait in Wild Antarctica Penguins, Pygoscelis adeliae

Published on: July 8, 2025

802
A Method for Investigating Change Blindness in Pigeons Columba Livia
06:14

A Method for Investigating Change Blindness in Pigeons Columba Livia

Published on: September 7, 2018

6.8K
Recording Single Neurons' Action Potentials from Freely Moving Pigeons Across Three Stages of Learning
11:20

Recording Single Neurons' Action Potentials from Freely Moving Pigeons Across Three Stages of Learning

Published on: June 2, 2014

12.5K

Area of Science:

  • Animal cognition
  • Comparative psychology
  • Visual perception

Background:

  • Previous studies on pigeon visual pattern categorization yielded conflicting results.
  • Potential limitations in earlier methodologies, such as display distortions and pattern inconsistencies, may have influenced findings.

Purpose of the Study:

  • To investigate the reasons for discrepancies in pigeon symmetry categorization research.
  • To evaluate pigeons' ability to distinguish between symmetric and asymmetric visual patterns.
  • To assess the impact of visual acuity and display technology on categorization performance.

Main Methods:

  • Conducted two ad-hoc experiments to assess pigeons' visual perception.
  • Reported on pigeons' visual flicker resolution and visual linear acuity.
  • Utilized slide-projected, unambiguous symmetric and asymmetric patterns in a smaller-scale experiment.

Main Results:

  • Pigeons exhibit superior visual flicker resolution and linear acuity compared to what was previously assumed.
  • Earlier studies using computer-generated patterns on CRT monitors were constrained by pictorial distortions.
  • Results from slide-projected patterns support the capacity of pigeons for symmetry-asymmetry categorization.

Conclusions:

  • Pigeons are capable of categorizing visual symmetry.
  • Methodological factors, including display quality and pattern clarity, are crucial for accurate assessment of pigeon visual categorization abilities.
  • Further investigation is needed to rule out potential artifactual cues in prior experiments.