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

Local Attraction01:22

Local Attraction

518
Local attraction refers to disturbances in compass readings caused by magnetic influences from nearby objects such as metal fences, buried pipes, vehicles, buildings, power lines, or natural iron ore deposits. Small items like wristwatches, steel tools, or belt buckles can also interfere with the compass by creating local magnetic fields that distort the Earth's natural magnetic field. These distortions lead to inaccurate readings, posing navigation and land surveying challenges.Local...
518
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

2.7K
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.
2.7K
Meridians01:28

Meridians

1.1K
In surveying, meridians are vital reference lines to measure directions and establish accurate land orientations. Meridians run from the north to the south poles, providing a stable framework for angular measurements and mapping. Meridians are fundamental in survey design, with the primary types being astronomic, magnetic, and assumed meridians. Each type offers distinct benefits and limitations, selected based on the project's scale and precision needs.The astronomic meridian is aligned with...
1.1K
Influence of Earth's Curvature and Atmospheric Refraction on Leveling01:26

Influence of Earth's Curvature and Atmospheric Refraction on Leveling

1.4K
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.
1.4K
Introduction to Surveying, Plane Surveying and Geodetic Surveys01:27

Introduction to Surveying, Plane Surveying and Geodetic Surveys

1.5K
Surveying is the art and science of mapping the earth's surface. It involves measuring distances, angles in horizontal or vertical directions, and levels to understand the shape and size of land features. Surveying techniques are essential for various tasks, such as identifying the levels of a land area with reference to a specific point, and mapping undulations and water bodies.There are two main types of surveying: plane surveys and geodetic surveys. Plane surveys assume the earth is flat,...
1.5K
Factors Affecting Perception01:25

Factors Affecting Perception

3.3K
Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
An illustrative example of a perceptual set is the scenario where an airline pilot told...
3.3K

You might also read

Related Articles

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

Sort by
Same author

Yield of a contact investigation among children living with drug-resistant TB patients.

The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease·2025
Same author

Corrigendum to "Blindness associated with platelet-rich plasma temporomandibular joint injections" [Br. J. Oral Maxillofac. Surg. 58(9) (2020) 1197-1199].

The British journal of oral & maxillofacial surgery·2022
Same author

Toxic epidermal necrolysis-like presentation of paraneoplastic pemphigus due to underlying thymoma: A clinical conundrum.

Journal of postgraduate medicine·2021
Same author

Adverse skin reactions related to PPE among healthcare workers managing COVID-19.

Journal of the European Academy of Dermatology and Venereology : JEADV·2021
Same author

Blindness associated with platelet-rich plasma temporomandibular joint injections.

The British journal of oral & maxillofacial surgery·2020
Same author

Increased Notching of the Corpus Callosum in Fetal Alcohol Spectrum Disorder: A Callosal Misunderstanding?

AJNR. American journal of neuroradiology·2020
Same journal

Mind wandering during first- and foreign-language reading.

Psychonomic bulletin & review·2026
Same journal

Lexical word processing is unaffected by rapid invisible frequency tagging in reading: Evidence from eye movements.

Psychonomic bulletin & review·2026
Same journal

Anxiety modulates voluntary attentional orienting to emotional gaze cues: Eye movements for pro- and anti-saccades.

Psychonomic bulletin & review·2026
Same journal

Faster key-press responses to front vowels than back vowels when matching heard vowels with represented vowels.

Psychonomic bulletin & review·2026
Same journal

Testing the interleaving effect without response bias: A forced-choice reevaluation of Kornell and Bjork (2008).

Psychonomic bulletin & review·2026
Same journal

The impact of social interaction on abstract concepts.

Psychonomic bulletin & review·2026
See all related articles

Related Experiment Video

Updated: May 6, 2026

Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues
08:04

Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues

Published on: December 4, 2013

4.0K

Perceiving geographical slant.

D R Proffitt1, M Bhalla, R Gossweiler

  • 1Department of Psychology, University of Virginia, Gilmer Hall, 22903-2477, Charlottesville, VA, drp@virginia.edu.

Psychonomic Bulletin & Review
|November 9, 2013
PubMed
Summary
This summary is machine-generated.

People overestimate hill steepness when judging visually, but not through physical interaction. This perceived exaggeration may help maintain our ability to navigate inclines, even with fatigue.

More Related Videos

Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
06:30

Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm

Published on: April 28, 2020

5.1K
Subjective Refraction Test Using a Smartphone for Vision Screening
05:36

Subjective Refraction Test Using a Smartphone for Vision Screening

Published on: October 18, 2024

2.1K

Related Experiment Videos

Last Updated: May 6, 2026

Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues
08:04

Measuring Sensitivity to Viewpoint Change with and without Stereoscopic Cues

Published on: December 4, 2013

4.0K
Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
06:30

Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm

Published on: April 28, 2020

5.1K
Subjective Refraction Test Using a Smartphone for Vision Screening
05:36

Subjective Refraction Test Using a Smartphone for Vision Screening

Published on: October 18, 2024

2.1K

Area of Science:

  • Perception and Cognition
  • Environmental Psychology
  • Human Factors Engineering

Background:

  • Understanding how humans perceive environmental features like slopes is crucial for navigation and safety.
  • Previous research suggests visual perception of slopes can be distorted.

Purpose of the Study:

  • To investigate the accuracy of perceived geographical slant under different viewing conditions (real-world vs. virtual).
  • To examine the influence of fatigue on perceived slant.
  • To compare subjective judgments with objective, action-based measures.

Main Methods:

  • Participants judged hill inclination using verbal estimates and visual adjustments in outdoor and virtual settings.
  • A tilt board task measured action-based judgments without visual feedback.
  • Fatigue was induced to assess its effect on perception.

Main Results:

  • Geographical slant was significantly overestimated using verbal and visual estimation methods.
  • Action-based judgments (tilt board) did not show overestimation and were unaffected by fatigue.
  • Perceived slant increased with fatigue, suggesting a link to behavioral potential.

Conclusions:

  • Visual perception of slopes is prone to overestimation, potentially enhancing sensitivity to traversable inclines.
  • Action-based perception remains veridical and is insulated from fatigue effects.
  • The overestimation of slant may serve an adaptive function, preserving behavioral capacity in challenging terrains.