Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Visual System

Visual System

Light enters the eye through the cornea, a transparent, dome-shaped surface covering the surface of the eyeball that helps to direct and focus incoming light. This light is then channeled toward the pupil, an adjustable opening whose size is controlled by the iris. The iris, a pigmented muscle, regulates the amount of light entering the eye by contracting or dilating the pupil, thereby ensuring optimal light levels for clear vision.
Once through the pupil, the light passes through the lens, a...

You might also read

Related Articles

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

Sort by

Same author

Explicit and implicit spatial mapping of face age.

Psychological research·2026

Same author

Culture shapes the SNARC-like effect for visual speed.

Psychonomic bulletin & review·2026

Same author

Ethnicity does not matter: Comparable reversed congruency effects for gaze stimuli from same- and other-ethnicity faces.

Psychological research·2025

Same author

Face perception: a window into the social mind.

Scientific reports·2025

Same author

Form and Temporal Integration in the Perception of Simple Glass Patterns.

Vision (Basel, Switzerland)·2025

Same author

Is mind wandering reflected in microsaccade dynamics?

Biological psychology·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

Search research articles

Related Experiment Video

Updated: May 30, 2025

Integrating Visual Psychophysical Assays within a Y-Maze to Isolate the Role that Visual Features Play in Navigational Decisions

Integrating Visual Psychophysical Assays within a Y-Maze to Isolate the Role that Visual Features Play in Navigational Decisions

Published on: May 2, 2019

A SNARC-like effect for visual speed.

Michele Vicovaro¹, Riccardo Boscariol², Mario Dalmaso³

¹Department of General Psychology, University of Padova, Via Venezia 8, 35131, Padova, Italy. michele.vicovaro@unipd.it.

Attention, Perception & Psychophysics

|January 29, 2025

Summary

This summary is machine-generated.

Visual speed is typically represented spatially from left to right, but this orientation can be disrupted by changing motion directions. This suggests that consistent stimulus presentation is key for spatial quantity representation.

Keywords:

SNARC SNARC-like effect Spatial representation Visual speed

More Related Videos

Using Rapid Serial Visual Presentation to Measure Set-Specific Capture, a Consequence of Distraction While Multitasking

Using Rapid Serial Visual Presentation to Measure Set-Specific Capture, a Consequence of Distraction While Multitasking

Published on: August 29, 2018

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Published on: January 23, 2017

Related Experiment Videos

Last Updated: May 30, 2025

Integrating Visual Psychophysical Assays within a Y-Maze to Isolate the Role that Visual Features Play in Navigational Decisions

Integrating Visual Psychophysical Assays within a Y-Maze to Isolate the Role that Visual Features Play in Navigational Decisions

Published on: May 2, 2019

Using Rapid Serial Visual Presentation to Measure Set-Specific Capture, a Consequence of Distraction While Multitasking

Using Rapid Serial Visual Presentation to Measure Set-Specific Capture, a Consequence of Distraction While Multitasking

Published on: August 29, 2018

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Published on: January 23, 2017

Area of Science:

Cognitive Psychology
Visual Perception
Spatial Cognition

Background:

Magnitudes, both numerical and nonnumerical, are often spatially represented on a left-to-right continuum.
These spatial representations are not fixed and can be influenced by contextual cues and task demands.
Visual speed, linked to physical space and direction, presents a unique case for spatial magnitude representation.

Purpose of the Study:

To investigate the spatial representation of visual speed.
To determine if visual speed aligns with the conventional left-to-right spatial orientation.
To explore the dynamic influence of stimulus movement direction on the spatial representation of speed.

Main Methods:

Four experiments were conducted comparing the speed of random dot kinematograms to a reference speed.
Participants used lateralised response keys for speed comparisons.
Stimulus movement directions varied across experiments: consistently left-to-right, random 360°, consistently right-to-left, and random horizontal left-to-right or right-to-left.

Main Results:

Experiments 1-3 demonstrated a stable left-to-right spatial representation of visual speed.
Experiment 4 showed that mutable motion directions along the horizontal axis compromised this spatial representation.
The findings suggest a stable left-to-right representation of speed is maintained when stimuli are perceived as a single set.

Conclusions:

The spatial representation of visual speed is generally consistent with a left-to-right orientation.
Dynamic changes in horizontal motion direction can disrupt the spatial representation of speed.
Perceiving stimuli as a unified set appears crucial for the development of spatial quantity representations.