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

Distance Problem01:29

Distance Problem

When an object's velocity changes over time, the total distance traveled can be determined by summing small displacement intervals over short increments. This approach approximates the true distance through numerical summation and the use of integral calculus. An estimate of the total displacement can be obtained by measuring velocity at regular intervals and multiplying each value by the corresponding time step.If a runner accelerates over the first three seconds of a race, speed measurements...
Estimation of the Physical Quantities01:05

Estimation of the Physical Quantities

On many occasions, physicists, other scientists, and engineers need to make estimates of a particular quantity. These are sometimes referred to as guesstimates, order-of-magnitude approximations, back-of-the-envelope calculations, or Fermi calculations. The physicist Enrico Fermi was famous for his ability to estimate various kinds of data with surprising precision. Estimating does not mean guessing a number or a formula at random. Instead, estimation means using prior experience and sound...
Design Example: Measuring Distance Between Two Points with Obstructions01:10

Design Example: Measuring Distance Between Two Points with Obstructions

When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
Influence of Earth's Curvature and Atmospheric Refraction on Leveling01:26

Influence of Earth's Curvature and Atmospheric Refraction on Leveling

During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
The Distance Formula01:20

The Distance Formula

In geometry, measuring the direct distance between two points on a plane is essential in various practical and theoretical applications. Whether in navigation, engineering, or computer graphics, determining the shortest path between two locations involves using the distance formula. This formula is derived from the Pythagorean Theorem, which relates the lengths of the sides of a right triangle. On a coordinate plane, the horizontal and vertical distances between two points serve as the legs of...
Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...

You might also read

Related Articles

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

Sort by
Same author

Processing speed deficits: A missing link in understanding individual variation in children's interval timing skills?

Developmental psychology·2026
Same author

Do Fathers and Mothers Socialize Physical Risk Taking Differently in Sons and Daughters?

Journal of applied developmental psychology·2026
Same author

Beyond helmet use: enhancing fit and safety in a youth bicycling program.

Traffic injury prevention·2025
Same author

Visual, auditory, and audiovisual time-to-collision estimation among participants with age-related macular degeneration compared to a normal-vision group: The TTC-AMD study.

PloS one·2025
Same author

Time-to-Collision Estimation With Age-Related Macular Degeneration Using Visual and Auditory Cues: Which Cues are Most Important?

Proceedings of the Human Factors and Ergonomics Society ... Annual Meeting. Human Factors and Ergonomics Society. Annual meeting·2025
Same author

Editorial special issue: Interacting with the physical world around us: Understanding the perception of risk.

Acta psychologica·2025
Same journal

Low prevalence targets are primarily missed due to mind wandering.

Attention, perception & psychophysics·2026
Same journal

An introduction to the special issue celebrating Mary A. Peterson.

Attention, perception & psychophysics·2026
Same journal

Properties of the threshold stimulus exposure duration (TSED) measure of visual search efficiency.

Attention, perception & psychophysics·2026
Same journal

Auditory selective attention in depth: Investigating directional dependency across front, lateral, and rear spaces.

Attention, perception & psychophysics·2026
Same journal

Dissociations between stereoacuity and visual acuity with binocular night vision goggles.

Attention, perception & psychophysics·2026
Same journal

Reward-based prioritization and perceptual feature effects on attentional flexibility in working memory.

Attention, perception & psychophysics·2026
See all related articles

Related Experiment Video

Updated: Jun 22, 2026

A Networked Desktop Virtual Reality Setup for Decision Science and Navigation Experiments with Multiple Participants
06:28

A Networked Desktop Virtual Reality Setup for Decision Science and Navigation Experiments with Multiple Participants

Published on: August 26, 2018

Estimating distance in real and virtual environments: Does order make a difference?

Christine J Ziemer1, Jodie M Plumert, James F Cremer

  • 1Departmentof Psychology, University of Iowa, Iowa City, IA 52242, USA. christine-ziemer@uiowa.edu

Attention, Perception & Psychophysics
|June 16, 2009
PubMed
Summary
This summary is machine-generated.

The order of experiencing real and virtual environments impacts distance perception accuracy. Initial real-world estimates are more accurate, suggesting memory influences spatial judgments in virtual reality.

More Related Videos

Virtual Reality Experiments with Physiological Measures
07:09

Virtual Reality Experiments with Physiological Measures

Published on: August 29, 2018

Photorealistic Learned Landscapes for Augmented Reality
06:54

Photorealistic Learned Landscapes for Augmented Reality

Published on: June 27, 2025

Related Experiment Videos

Last Updated: Jun 22, 2026

A Networked Desktop Virtual Reality Setup for Decision Science and Navigation Experiments with Multiple Participants
06:28

A Networked Desktop Virtual Reality Setup for Decision Science and Navigation Experiments with Multiple Participants

Published on: August 26, 2018

Virtual Reality Experiments with Physiological Measures
07:09

Virtual Reality Experiments with Physiological Measures

Published on: August 29, 2018

Photorealistic Learned Landscapes for Augmented Reality
06:54

Photorealistic Learned Landscapes for Augmented Reality

Published on: June 27, 2025

Area of Science:

  • Cognitive Psychology
  • Human-Computer Interaction
  • Virtual Reality Studies

Background:

  • Accurate distance estimation is crucial for navigation and interaction in both real and virtual environments.
  • Previous research has explored factors influencing spatial perception, but the impact of sequential environmental experiences is less understood.

Purpose of the Study:

  • To investigate how the order of experiencing real versus virtual environments affects human distance estimation.
  • To determine if memory plays a role in modulating spatial perception across different environmental modalities.

Main Methods:

  • Participants provided distance estimates in real and virtual environments under various sequential conditions (e.g., real-then-virtual, virtual-then-real).
  • Experiment 1 involved imagined walking times for distance estimation.
  • Experiment 2 combined blindfolded walking in a real environment with imagined walking in a virtual environment.

Main Results:

  • Initial distance estimates were significantly more accurate in the real environment compared to the virtual environment.
  • When environments were repeated (real-real, virtual-virtual), accuracy remained higher for real environments.
  • When environments were alternated (real-virtual, virtual-real), the accuracy difference between environments diminished for the second estimate.

Conclusions:

  • The sequence of exposure to real and virtual environments influences distance perception.
  • Memory representations of real-world distances appear to impact subsequent virtual environment estimations.
  • These findings highlight the role of memory in mediating spatial perception across physical and simulated realities.