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

Selective adaptation to color contrast in human primary visual cortex.

S A Engel1, C S Furmanski

  • 1Department of Psychology, University of California, Los Angeles, Los Angeles, California 90025, USA. engel@psych.ucla.edu

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|May 23, 2001
PubMed
Summary

Selective adaptation to color contrast is explained by neural activity in the primary visual cortex (V1). This study shows V1 neurons adjust their responses, matching perceptual experience and resolving discrepancies in color vision research.

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

Mental models change rapidly with implicitly acquired information about the local environment: a two-tone image study.

Journal of experimental psychology. Human perception and performance·2001
Same author

Interocular rivalry revealed in the human cortical blind-spot representation.

Nature·2001
Same author

Unfolding the human hippocampus with high resolution structural and functional MRI.

The Anatomical record·2001
Same author

Neural response to perception of volume in the lateral occipital complex.

Neuron·2001
Same author

Remembering episodes: a selective role for the hippocampus during retrieval.

Nature neuroscience·2000
Same author

Application of cortical unfolding techniques to functional MRI of the human hippocampal region.

NeuroImage·2000

Area of Science:

  • Neuroscience
  • Visual Perception
  • Color Vision

Background:

  • The neural basis of color perception and selective adaptation remains controversial.
  • Discrepancies exist between behavioral observations and physiological data in color vision.
  • Selective adaptation to color contrast affects perception of similarly colored stimuli.

Purpose of the Study:

  • To investigate the neural mechanisms underlying selective adaptation to color contrast.
  • To determine if primary visual cortex (V1) activity reflects perceptual adaptation.
  • To reconcile behavioral findings with physiological data in color vision.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was used to measure neural activity in V1.
  • Subjects viewed red-green (L-M) and light-dark (L+M) gratings before and after adaptation.

Related Experiment Videos

  • Behavioral measures assessed perceptual changes in stimulus intensity after adaptation.

    • Main Results:

    • Adaptation to high-contrast L-M stimuli reduced V1 activity for L-M test gratings.
    • Adaptation to high-contrast L+M stimuli reduced V1 activity for L+M test gratings.
    • Neural adaptation effects in V1 closely mirrored behavioral results.

    Conclusions:

    • Primary visual cortex (V1) contains color-selective neurons that adapt independently.
    • Neural activity in V1 shows adaptation effects consistent with perceptual experience.
    • These findings help explain the neural basis of selective adaptation in color vision.