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 Experiment Videos

Objects, raised lines, and the haptic horizontal-vertical illusion.

Morton A Heller1, Deneen D Bracket, Shana S Salik

  • 1Department of Psychology, Eastern Illinois University, Physical Sciences Building, Charleston, IL 61920, USA. cfmah1@eiu.edu

The Quarterly Journal of Experimental Psychology. A, Human Experimental Psychology
|July 10, 2003
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Illusions exist in everyday life with natural stimuli: The banana-bisection Illusion.

Perception·2024
Same author

Perinatal Mood and Anxiety Disorder Management in Multicenter Community Practices: Clinicians' Training, Current Practices and Perceived Strategies to Improve Future Implementation.

Journal of primary care & community health·2021
Same author

Sequential Minimally Invasive Fetal Interventions for Two Life-Threatening Conditions: A Novel Approach.

Fetal diagnosis and therapy·2020
Same author

The effects of familiarity and orientation in the haptic change task.

Attention, perception & psychophysics·2020
Same author

The effect of visual magnification and reduction on perceived hand size.

Attention, perception & psychophysics·2014
Same author

The horizontal-vertical curvature illusion in touch is present in three-dimensional objects and raised lines.

The American journal of psychology·2013

The haptic horizontal-vertical illusion, an overestimation of horizontal lines, occurs with 3D objects when explored by grasping. This illusion disappears when objects are traced by fingertip, showing exploration strategy matters.

Area of Science:

  • Psychology
  • Neuroscience
  • Human Perception

Background:

  • The horizontal-vertical illusion is a well-documented visual phenomenon.
  • Previous research has primarily focused on visual perception of this illusion.
  • The occurrence of this illusion in haptic perception, particularly with 3D objects, remains less explored.

Purpose of the Study:

  • To investigate the haptic horizontal-vertical illusion with solid, three-dimensional objects.
  • To determine if the illusion differs between free haptic exploration and fingertip tracing.
  • To understand the role of exploration strategy in haptic size misperception.

Main Methods:

  • Experiments used 3D objects with round or square bases and projecting dowel rods.
  • Participants explored objects using free haptic exploration (grasping motion) and fingertip tracing.

Related Experiment Videos

  • Subjects also adjusted a vertical dowel to match perceived base size and used a tangible ruler for measurement.

    • Main Results:

    • A negative illusion (overestimation of horizontals) was observed with free haptic exploration and grasping motions.
    • The illusion was absent when participants used fingertip tracing to explore the objects.
    • Overestimation of size was found with the grasping method but not with a tangible ruler, suggesting a general size overestimation bias.

    Conclusions:

    • The haptic horizontal-vertical illusion is dependent on the strategy used for exploring 3D objects.
    • Grasping exploration of 3D objects can elicit illusory misperceptions similar to those seen with 2D stimuli.
    • Object orientation and exploration method are critical factors in haptic size perception, influencing illusory effects.