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

Spatial summation effects on two-component grating thresholds.

R F Quick, W W Mullins, T A Reichert

Journal of the Optical Society of America

|January 1, 1978

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

Random pattern generation using coherent optical spatial filtering.

Applied optics·2010

Same author

Orientation selectivity in detection of chromatic gratings.

Optics letters·2009

Same author

Protecting residential care facilities from pandemic influenza.

Proceedings of the National Academy of Sciences of the United States of America·2008

Same author

The Japanese experience with vaccinating schoolchildren against influenza.

The New England journal of medicine·2001

Same author

Idiopathic CD4+ T-lymphocytopenia: a quantitative view.

Lancet (London, England)·1993

Same author

Fc-receptor for mouse IgG1 (Fc gamma RII) and antibody-mediated cell clearance in patients treated with Leu2a antibody.

Transplantation·1989

Same journal

Response curves for types of vision according to the Müller theory.

Journal of the Optical Society of America·2010

Same journal

Reading equipment for partially blind people.

Journal of the Optical Society of America·2010

Same journal

Effects of anoxia, oxygen, and increased intrapulmonary pressure on dark adaptation.

Journal of the Optical Society of America·2010

Same journal

Investigations on the site of origin of blackout in man.

Journal of the Optical Society of America·2010

Same journal

The ultraviolet absorption spectra and other physical data for cardiolipin, a new phospholipid, and lecithin isolated from beef heart.

Journal of the Optical Society of America·2010

Same journal

The effect of colored lenses upon color discrimination.

Journal of the Optical Society of America·2010

See all related articles

Previous studies suggested narrow visual channels. This research proposes an alternative interpretation using probability summation, indicating that visual channels might be broader than previously thought.

Area of Science:

Vision Science
Human Perception
Visual Neuroscience

Background:

Experimental studies on subthreshold summation of sinusoidal grating components have led to interpretations of narrow channel bandwidths in human vision.
These interpretations are based on how the visual system integrates stimuli below the threshold of conscious perception.

Purpose of the Study:

To propose an alternative interpretation of experimental data concerning visual channel bandwidths.
To re-evaluate the concept of channel bandwidth by considering probability summation effects.

Main Methods:

Analysis of existing experimental data on subthreshold summation.
Application of probability summation models to explain the observed phenomena.
Comparison of predictions from probability summation with those from narrow channel bandwidth models.

Related Experiment Videos

Main Results:

The data can be explained by probability summation among spatially distributed detectors.
This alternative interpretation suggests that frequency-selective channels are still necessary.
However, the bandwidth of these channels may be significantly wider than previously inferred.

Conclusions:

The concept of narrow visual channels may be an oversimplification.
Probability summation offers a viable alternative explanation for subthreshold summation data.
Future research should consider broader channel bandwidths in models of human vision.