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 Experiment Videos

Scene content selected by active vision.

Derrick J Parkhurst1, Ernst Niebur

  • 1Department of Psychological and Brain Sciences, Zanvyl Krieger Mind/Brain Institute, Johns Hopkins University, Baltimore, Maryland 21218, USA.

Spatial Vision
|April 17, 2003
PubMed
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

The role of attention in multi attribute decision making.

Nature communications·2025
Same author

Event-driven figure-ground organisation model for the humanoid robot iCub.

Nature communications·2025
Same author

An Exploratory Study of Large-Scale Brain Networks during Gambling Using SEEG.

Brain sciences·2024
Same author

Quantifying Phase-Amplitude Modulation in Neural Data.

... Annual Conference on Information Sciences and Systems. Annual Conference on Information Sciences and Systems·2024
Same author

The influence of stereopsis on visual saliency in a proto-object based model of selective attention.

Vision research·2023
Same author

The cellular architecture of memory modules in <i>Drosophila</i> supports stochastic input integration.

eLife·2023

The primate visual system prioritizes high-contrast, less correlated image regions during active vision and eye movements. These findings reveal how attention guides the selection of visual information for processing.

Area of Science:

  • Neuroscience
  • Computational Vision
  • Visual Perception

Background:

  • The primate visual system uses visual attention and saccadic eye movements to select information for processing.
  • Understanding the statistical properties of selected scene content is crucial for modeling active vision.

Purpose of the Study:

  • To examine the statistical properties of scene content selected by active vision in primates.
  • To investigate how local contrast and spatial correlation at fixation points relate to image characteristics.

Main Methods:

  • Recorded eye movements during free viewing of natural and artificial scenes.
  • Extracted image patches around fixation points and calculated local contrast, spatial correlation, and spatial frequency.
  • Compared fixation point statistics to random locations and shuffled image databases.

Related Experiment Videos

Main Results:

  • Fixation points exhibited higher local contrast than random locations, replicating prior studies.
  • Observed significant decorrelation of image intensity at fixation points compared to neighboring areas.
  • Effect sizes for contrast and correlation were largest around 1 degree of visual angle.

Conclusions:

  • Local contrast and correlation at fixation points are influenced by image type and overall image statistics.
  • Findings align with optimal spatial scale selectivity in the visual periphery for saccade target selection.
  • Methodological analysis provided explanations for discrepancies in existing literature.