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

Virtual Work01:20

Virtual Work

1.4K
The principle of virtual work states that if a body is in static and dynamic equilibrium, then the sum of all the virtual work done by all external forces and couple moments for any given virtual displacement must be zero.
In static equilibrium, a body can experience an imaginary or virtual movement, such as displacement or rotation. The virtual work done by a force is equal to the dot product of force and virtual displacement in the direction of the force. When it comes to virtually rotating a...
1.4K
Understanding Consciousness01:23

Understanding Consciousness

2.2K
Consciousness can be defined as the state of being aware of and able to think about one's existence, sensations, and surroundings. It encompasses two major components: awareness and arousal. Awareness pertains to the recognition of environmental stimuli and internal states. At the same time, arousal refers to the physiological readiness to engage with these stimuli, which varies significantly between states like sleep and wakefulness.
Sleep, a crucial state, is characterized by reduced...
2.2K
Principle of Virtual Work: Problem Solving01:13

Principle of Virtual Work: Problem Solving

1.7K
The principle of virtual work is an essential concept in the field of mechanics and engineering. This is used to solve problems related to the equilibrium of a structure or system. It is based on the assumption that if a system is in equilibrium, the work done by all the forces during a virtual displacement is zero. This principle is applied by considering virtual displacements of the system and the corresponding work done by internal and external forces.
To apply the principle of virtual work,...
1.7K
Virtual Work for a System of Connected Rigid Bodies01:06

Virtual Work for a System of Connected Rigid Bodies

770
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,...
770
Real Number System01:27

Real Number System

1.2K
The real number system includes all numbers used for counting, measuring, and comparing quantities. Natural numbers are the basic counting numbers: 1, 2, 3, and so on. Integers expand this set by including zero and negative whole numbers: ..., –3, –2, –1, 0, 1, 2, .... Rational numbers are those that can be expressed as the ratio of two integers m/n, where n≠0. This includes fractions like 1/2​, integers such as 46, and decimals that terminate, such as 0.17, or...
1.2K
Real Number Operations01:27

Real Number Operations

339
The concept of real numbers includes all the values that can be represented on a continuous number line. The system began with basic counting values used for enumeration. It later expanded to include values that represent the absence of quantity and opposites of the counting values. When situations required expressing parts of a whole or dividing quantities evenly, values capable of representing such proportions were developed. When written using decimal notation, these values can end or repeat...
339

You might also read

Related Articles

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

Sort by
Same author

Real-Time Cardiac Biofeedback Intervention: Experiences of Patient and Public Involvement in a Randomized Controlled Trial.

Journal of participatory medicine·2026
Same author

Vicarious Touch: A Potential Substitute for Social Touch During Touch Deprivation.

European journal of social psychology·2026
Same author

Feasibility and acceptability outcomes of the InMe trial - a randomised controlled trial in participants with subclinical eating and somatic symptom disorders.

PloS one·2026
Same author

Interoception and allostatic load after stroke: A scoping review.

Neuroscience and biobehavioral reviews·2026
Same author

The wellbeing framework for consumer experiences in the circular economy of the textile industry.

Humanities & social sciences communications·2025
Same author

Touch in psychotherapy: Experiences, desires and attitudes in a large population survey.

Psychotherapy research : journal of the Society for Psychotherapy Research·2025
Same journal

Imagine No Resources: Attention Is Selection and Normalization for Choice.

Perspectives on psychological science : a journal of the Association for Psychological Science·2026
Same journal

Children's Third-Party Punishment Reveals a Genuine Concern for Fairness and Justice.

Perspectives on psychological science : a journal of the Association for Psychological Science·2026
Same journal

Chaos Theory and Child Development: Quantifying Nonlinear Pathways of Growth.

Perspectives on psychological science : a journal of the Association for Psychological Science·2026
Same journal

Formal Modeling as Theoretical Glue between Laboratory and Naturalistic Studies of Memory.

Perspectives on psychological science : a journal of the Association for Psychological Science·2026
Same journal

Growing Technological Opacity and the Social Brain.

Perspectives on psychological science : a journal of the Association for Psychological Science·2026
Same journal

Bringing the Reading Sciences Into the Classroom: Insights for Phonics Instruction.

Perspectives on psychological science : a journal of the Association for Psychological Science·2026
See all related articles

Related Experiment Video

Updated: Feb 12, 2026

The use of Biofeedback in Clinical Virtual Reality: The INTREPID Project
06:52

The use of Biofeedback in Clinical Virtual Reality: The INTREPID Project

Published on: November 12, 2009

15.7K

Presence Is Reality: Rethinking Virtual and Real-World Consciousness.

Oliver Singleton1, Aikaterini Fotopoulou1

  • 1Clinical, Educational and Health Psychology Research Department, Division of Psychology and Language Sciences, University College London.

Perspectives on Psychological Science : a Journal of the Association for Psychological Science
|February 10, 2026
PubMed
Summary
This summary is machine-generated.

Presence and reality are not distinct but continuous experiences, challenging traditional definitions. Virtual reality (VR) can help study the sense of reality and its disorders.

Keywords:
VRpredictive processingpresencevirtual reality

More Related Videos

Virtual Reality Experiments with Physiological Measures
07:09

Virtual Reality Experiments with Physiological Measures

Published on: August 29, 2018

13.3K
Using Virtual Reality to Transfer Motor Skill Knowledge from One Hand to Another
05:12

Using Virtual Reality to Transfer Motor Skill Knowledge from One Hand to Another

Published on: September 18, 2017

548.8K

Related Experiment Videos

Last Updated: Feb 12, 2026

The use of Biofeedback in Clinical Virtual Reality: The INTREPID Project
06:52

The use of Biofeedback in Clinical Virtual Reality: The INTREPID Project

Published on: November 12, 2009

15.7K
Virtual Reality Experiments with Physiological Measures
07:09

Virtual Reality Experiments with Physiological Measures

Published on: August 29, 2018

13.3K
Using Virtual Reality to Transfer Motor Skill Knowledge from One Hand to Another
05:12

Using Virtual Reality to Transfer Motor Skill Knowledge from One Hand to Another

Published on: September 18, 2017

548.8K

Area of Science:

  • Cognitive Science
  • Virtual Reality (VR) Research
  • Neuroscience

Background:

  • The sense of presence (feeling "there") and the sense of reality (discriminating real from unreal) are often treated as separate.
  • Existing literature shows inconsistent and interchangeable use of these terms in cognitive science and VR studies.

Purpose of the Study:

  • To challenge the dichotomy between presence and reality.
  • To propose that presence and reality are continuous phenomena.
  • To integrate perceptual and cognitivist theories of presence.

Main Methods:

  • Review and synthesis of cognitive science and VR literature.
  • Identification of converging psychophysical findings in multisensory integration, self-embodiment, and agency.
  • Analysis of preliminary neuroimaging data.

Main Results:

  • Presence and reality share conceptual, mechanistic, and phenomenological continuity.
  • Integrative mechanisms likely underpin both presence and reality.
  • Converging evidence exists in multisensory integration, self-embodiment, and agency.
  • Preliminary neuroimaging suggests a shared frontolimbic neural substrate for "realness."

Conclusions:

  • Presence and reality should be viewed as continuous, not dichotomous.
  • Virtual reality (VR) is a valid tool for studying the sense of reality and related clinical disorders.
  • Future research should directly compare presence and reality to test for functional and neural equivalence.