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

Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

1.1K
A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
1.1K
Three-Dimensional Force System01:30

Three-Dimensional Force System

2.6K
In mechanical engineering, a three-dimensional force system is a system of forces acting in three dimensions, with forces applied along the x, y, and z coordinate axes. The three-dimensional force system is an important concept in mechanical engineering, as it allows engineers to understand and analyze the behavior of objects and structures in three dimensions. By understanding the forces acting on a system, engineers can design more efficient and effective mechanical systems that can withstand...
2.6K
Support Reactions in Three Dimensions01:27

Support Reactions in Three Dimensions

1.4K
Support reactions in three dimensions help maintain the stability and equilibrium of various structures and systems. These reactions prevent the system from translating and rotating, ensuring the design can withstand external forces and perform its intended function efficiently and safely. Some of the supports providing support reactions in three dimensions are discussed below:
Ball and Socket Joint is one of the supports allowing free rotation about any axis. This freedom of rotation is...
1.4K
Virtual Work for a System of Connected Rigid Bodies01:06

Virtual Work for a System of Connected Rigid Bodies

539
Virtual work is a powerful method used to solve problems involving several connected rigid bodies. When the system is in equilibrium, virtual work is zero. This allows the calculation of the resulting forces when a system undergoes a virtual displacement. When attempting to analyze such a system, first, use a free-body diagram, where an independent coordinate represents the configuration of the links, and mark its deflected position resulting from the positive virtual displacement.
Next,...
539
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

1.3K
Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
1.3K
Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

208
When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
208

You might also read

Related Articles

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

Sort by
Same author

Constrained Multivariate Functional Principal Components Analysis for Novel Outcomes in Eye-Tracking Experiments.

Statistics in biosciences·2024
Same author

Infants' Preference for ID Speech in Face and Voice Extends to a Non-Native Language.

Infancy : the official journal of the International Society on Infant Studies·2024
Same author

Minding the gap: a sex difference in young infants' mental rotation through thirty degrees of arc.

Frontiers in psychology·2024
Same author

Effects of conflicting emotional cues on toddlers' emotion perception.

The British journal of developmental psychology·2024
Same author

Comparing apples to manzanas and oranges to naranjas: A new measure of English-Spanish vocabulary for dual language learners.

Infancy : the official journal of the International Society on Infant Studies·2024
Same author

The Selective Social Attention task in children with autism spectrum disorder: Results from the Autism Biomarkers Consortium for Clinical Trials (ABC-CT) feasibility study.

Autism research : official journal of the International Society for Autism Research·2023
Same journal

Early and Chronic Postnatal Depression, Maternal Sensitivity to Non-Distress and Infant Neurodevelopmental Outcomes in an Indian Birth Cohort.

Infancy : the official journal of the International Society on Infant Studies·2026
Same journal

Infants Anticipate the Timing of Sounds From Dynamic Collision Events.

Infancy : the official journal of the International Society on Infant Studies·2026
Same journal

Dips in Development: Learning to Walk Temporarily Disrupts Infant Vocalization.

Infancy : the official journal of the International Society on Infant Studies·2026
Same journal

Infants' Multimodal Requests and Protests Elicit Responses From Mothers During Everyday Home Activities.

Infancy : the official journal of the International Society on Infant Studies·2026
Same journal

Melody and Lyrics Are Integrated by Late Infancy During Recognition of Music Learned at Home.

Infancy : the official journal of the International Society on Infant Studies·2026
Same journal

Joint Attention in Late Preterm Infants: Developmental Trajectory and Contribution of Maternal Interaction.

Infancy : the official journal of the International Society on Infant Studies·2026
See all related articles

Related Experiment Video

Updated: Nov 7, 2025

Three-Dimensional Printing of a Complex Aortic Anomaly
03:40

Three-Dimensional Printing of a Complex Aortic Anomaly

Published on: November 1, 2018

6.9K

Development of Three-Dimensional Completion of Complex Objects.

Kasey C Soska1, Scott P Johnson2

  • 1University of Virginia.

Infancy : the Official Journal of the International Society on Infant Studies
|May 3, 2021
PubMed
Summary
This summary is machine-generated.

Infants develop three-dimensional (3D) object completion around 6 months. This study shows 6-month-old boys and 9.5-month-olds can complete complex 3D objects, unlike younger infants or 6-month-old girls.

Keywords:
infancyobject perceptionperceptual completionperceptual developmentsex differencesstimulus complexity

More Related Videos

Photorealistic Learned Landscapes for Augmented Reality
06:54

Photorealistic Learned Landscapes for Augmented Reality

Published on: June 27, 2025

404
Three-Dimensional Reconstruction of Orbital Fractures
08:18

Three-Dimensional Reconstruction of Orbital Fractures

Published on: May 16, 2025

425

Related Experiment Videos

Last Updated: Nov 7, 2025

Three-Dimensional Printing of a Complex Aortic Anomaly
03:40

Three-Dimensional Printing of a Complex Aortic Anomaly

Published on: November 1, 2018

6.9K
Photorealistic Learned Landscapes for Augmented Reality
06:54

Photorealistic Learned Landscapes for Augmented Reality

Published on: June 27, 2025

404
Three-Dimensional Reconstruction of Orbital Fractures
08:18

Three-Dimensional Reconstruction of Orbital Fractures

Published on: May 16, 2025

425

Area of Science:

  • Developmental Psychology
  • Cognitive Neuroscience
  • Perception

Background:

  • Three-dimensional (3D) object completion emerges around 6 months.
  • Previous studies used simple 3D objects, limiting understanding of complex object perception.

Purpose of the Study:

  • To investigate 3D object completion in infants using complex stimuli.
  • To explore age and sex differences in 3D object completion abilities.

Main Methods:

  • Habituation paradigm with an "L"-shaped object presented from a limited viewpoint.
  • Testing with volumetrically complete and incomplete versions of the object.
  • Participants included 4-month-olds, 6-month-olds (boys and girls), and 9.5-month-olds, plus a control group.

Main Results:

  • 4-month-olds and 6-month-old girls showed no preference.
  • 6-month-old boys and both sexes at 9.5 months preferred the incomplete object.
  • A control group exhibited no spontaneous preference.

Conclusions:

  • Perceptual completion of complex 3D objects requires integrating multiple features, potentially taxing attentional skills.
  • Mental rotation may aid performance, possibly explaining the advantage in young boys.
  • Complex 3D object completion development reveals distinct mechanisms for acquisition and refinement in infancy.