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

Search research articles

Related Experiment Videos

Masking by spatially-modulated gratings.

J Nachmias, B E Rogowitz

Vision Research

|January 1, 1983

Summary

This summary is machine-generated.

High-frequency masker gratings with specific frequency modulations impact signal detectability, with effects varying by relative phase. The visual system

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

How is a grating detected on a narrowband noise masker?

Vision research·1999

Same author

Masked detection of gratings: the standard model revisited.

Vision research·1993

Same author

Contrast modulated maskers: test of a late nonlinearity hypothesis.

Vision research·1989

Same author

Primary giant calculus in urethral diverticulum.

Urologia internationalis·1988

Same author

Phase reversal discrimination.

Vision research·1984

Same author

Spatial/temporal interactions: backward and forward metacontrast masking with sine-wave gratings.

Vision research·1983

Same journal

Computational and mathematical models in vision: Quantitative approaches to understanding visual perception.

Vision research·2026

Same journal

Complex interactions between lightness, chroma, and hue in color ensemble perception.

Vision research·2026

Same journal

Driving with autism spectrum disorder: Exploring the impact of tactile hazard warnings on gaze behavior and hazard responses.

Vision research·2026

Same journal

Early visual processing in adults with ADHD: evidence from contrast sensitivity, spatial integration, and external noise.

Vision research·2026

Same journal

Pupil reflexes generate the peripheral drift illusion due to ON/OFF motion responses.

Vision research·2026

Same journal

Perceived direction of glass patterns can flip by 90°: A neural model.

Vision research·2026

See all related articles

Area of Science:

* Visual perception and spatial frequency processing.
* Nonlinear system analysis in human vision.

Background:

* Masker gratings with high spatial frequencies can interfere with detecting lower spatial frequency signals.
* Phase-dependent effects on signal detectability are observed with modulated maskers, but not unmodulated ones.

Purpose of the Study:

* To investigate the role of visual nonlinearity in phase-dependent masking effects.
* To test the hypothesis that a distortion product explains these masking phenomena.

Main Methods:

* Experimentally measuring the detectability of a 2.2 c/deg signal grating.
* Using contrast- or quasi-frequency-modulated masker gratings with high spatial frequency components (8.8, 11, 13.2 c/deg).

Main Results:

Related Experiment Videos

* Phase-dependent effects on signal detectability were observed with modulated maskers.
* The visual system's nonlinear response to luminance was explored as a potential cause.
* A proposed distortion product hypothesis was partially supported but also contradicted by findings.

Conclusions:

* Visual nonlinearity likely contributes to phase-dependent masking effects.
* The specific distortion product hypothesis does not fully account for the observed phenomena.
* Further research is needed to fully understand the mechanisms behind these visual masking effects.