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

A new elementary feature of vision.

¹Center for Biological Information Processing, Massachusetts Institute of Technology, Cambridge.

Investigative Ophthalmology & Visual Science

|June 1, 1991

Summary

The human visual system can detect tiny line misalignments (vernier offsets) in parallel across the visual field. However, determining the offset

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

Long-Term Effects of Serial Anodal tDCS on Motion Perception in Subjects with Occipital Stroke Measured in the Unaffected Visual Hemifield.

Frontiers in human neuroscience·2013

Same author

Orientation specificity of learning vernier discriminations.

Vision research·2009

Same author

[Functional vision training after MIOL implantation].

Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·2008

Same author

[Colour vision and acquired colour vision disturbances. Part I: basic aspects].

Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·2006

Same author

[Central vision].

Klinische Monatsblatter fur Augenheilkunde·2004

Same author

Grasp effects of the Ebbinghaus illusion: obstacle avoidance is not the explanation.

Experimental brain research·2003

Area of Science:

Visual perception
Hyperacuity
Sensation and perception

Background:

Humans can process elementary visual features like orientation and color in parallel.
Hyperacuity tasks, such as vernier offset detection, probe the limits of spatial resolution in human vision.

Purpose of the Study:

To investigate the parallel processing capabilities of the human visual system for detecting orientation discontinuities.
To determine if the visual system can simultaneously identify vernier offsets across multiple locations.

Main Methods:

Utilized flash presentation with a subsequent mask to present visual stimuli.
Tested the detection of vernier offsets, including those smaller than foveal photoreceptor diameter, among distractors.

Main Results:

The visual system can detect vernier offsets in parallel across numerous visual field positions.
Detection of these hyperacuity-level misalignments is possible even with brief exposures.

Conclusions:

The visual system possesses a parallel mechanism for detecting orientation gradients and misalignments within the hyperacuity range.
Classifying the direction of vernier offsets requires a serial search process, unlike simple detection.

Related Experiment Videos