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

Perceptual Constancy01:12

Perceptual Constancy

Perceptual constancy is the ability to recognize that objects remain consistent and unchanged even when their appearance varies due to changes in sensory input. There are four main types of perceptual constancy: size constancy, shape constancy, color constancy, and brightness constancy.
Size constancy is the recognition that an object remains the same size, even when its image on the retina changes. For instance, a bus is perceived to be large enough to carry people, even if it looks tiny from...
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

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.
Gestalt Principles of Perception01:21

Gestalt Principles of Perception

Gestalt principles provide a framework for understanding how humans perceive objects as unified wholes within their context. These principles are essential in explaining the cognitive processes that make sense of complex visual stimuli by organizing them into coherent groups. One fundamental principle is proximity, which posits that objects located close to each other are perceived as a collective group. For instance, when dots are positioned near one another, the visual system interprets them...
Color Vision01:24

Color Vision

Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.

You might also read

Related Articles

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

Sort by
Same author

Excitatory and inhibitory lateral interactions effects on contrast detection are modulated by tRNS.

Scientific reports·2019
Same author

Protective effect of quercetin against in vitro erythrocyte rheology alterations produced by arsenic.

Clinical hemorheology and microcirculation·2014
Same author

[Evaluation of clinical and humoral data in 148 patients with Piaget's bone disease].

Medicina·2011
Same author

Anaemia, iron and vitamin deficits in patients with peripheral arterial disease.

European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery·2011
Same author

Gas gangrene by injection of adrenaline.

El Dia medico·2010
Same author

Psychophysical and electrophysiological evidence of independent facilitation by collinearity and similarity in texture grouping and segmentation.

Vision research·2009

Related Experiment Video

Updated: Jun 15, 2026

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss
07:12

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

The relationship between visual persistence and event perception in bistable motion display.

C Casco1

  • 1Dipartimento di Psicologia Generale, Università di Padova, Italy.

Perception
|January 1, 1990
PubMed
Summary
This summary is machine-generated.

Perception of apparent motion depends on interframe interval (IFI). Short IFIs show element motion, while long IFIs reveal group motion, influenced by bar size and edge blur.

More Related Videos

Eye Movements in Visual Duration Perception: Disentangling Stimulus from Time in Predecisional Processes
09:27

Eye Movements in Visual Duration Perception: Disentangling Stimulus from Time in Predecisional Processes

Published on: January 19, 2024

How to Build a Dichoptic Presentation System That Includes an Eye Tracker
05:48

How to Build a Dichoptic Presentation System That Includes an Eye Tracker

Published on: September 6, 2017

Related Experiment Videos

Last Updated: Jun 15, 2026

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss
07:12

A Gaze-Contingent Display Framework for Perceptual Learning Research with Simulated Central Vision Loss

Published on: April 11, 2025

Eye Movements in Visual Duration Perception: Disentangling Stimulus from Time in Predecisional Processes
09:27

Eye Movements in Visual Duration Perception: Disentangling Stimulus from Time in Predecisional Processes

Published on: January 19, 2024

How to Build a Dichoptic Presentation System That Includes an Eye Tracker
05:48

How to Build a Dichoptic Presentation System That Includes an Eye Tracker

Published on: September 6, 2017

Area of Science:

  • Visual perception
  • Motion perception
  • Psychophysics

Background:

  • Apparent motion perception is a fundamental aspect of visual processing.
  • Bistable apparent motion, where perception can switch between different interpretations (e.g., group vs. element motion), is influenced by stimulus parameters.

Purpose of the Study:

  • To investigate how interframe interval (IFI) and stimulus characteristics affect the perception of group motion versus element motion.
  • To determine the temporal limits for element motion perception under varying conditions.

Main Methods:

  • Observers viewed two alternating frames with three laterally displaced rectangular bars.
  • Stimuli varied in interframe interval (IFI), bar edge blur, frame duration, bar size, and relative element sizes.
  • Participants reported their perception of either group motion or element motion.

Main Results:

  • Element motion was perceived at short IFIs, while group motion was perceived at long IFIs.
  • The upper temporal limit for element motion perception decreased with increased frame duration or bar size, and with blurred bar edges.
  • Element motion dominance was maintained up to 230 ms IFI when inner and outer elements differed in size.

Conclusions:

  • The perception of bistable apparent motion is sensitive to temporal and spatial stimulus properties.
  • Findings suggest that spatial tuning of motion mechanisms plays a role in differentiating between group and element motion percepts.