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

Local and global processes in surface lightness perception

J Cataliotti1, A Gilchrist

  • 1Upsala College, East Orange, New Jersey.

Perception & Psychophysics
|February 1, 1995
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

Characterizing quantum dynamics with initial system-environment correlations.

Physical review letters·2015
Same author

Identifying bias in CCR1 antagonists using radiolabelled binding, receptor internalization, β-arrestin translocation and chemotaxis assays.

British journal of pharmacology·2014
Same author

Modulation of PAR(1) signalling by benzimidazole compounds.

British journal of pharmacology·2012
Same author

Antagonist minigenes identify genes regulated by parathyroid hormone through G protein-selective and G protein co-regulated mechanisms in osteoblastic cells.

Cellular signalling·2010
Same author

Methyl iodide photodissociation at 193 nm: The I(2P(1/2)) quantum yield.

The journal of physical chemistry. A·2008
Same author

Manipulating biphotonic qutrits.

Physical review letters·2008
Same journal

Response organization in selective adaptation to speech sounds.

Perception & psychophysics·2014
Same journal

Reaction times to comparisons within and across phonetic categories.

Perception & psychophysics·2012
Same journal

Auditory and phonetic memory codes in the discrimination of consonants and vowels.

Perception & psychophysics·2012
Same journal

Simple and contingent adaptation effects for place of articulation in stop consonants.

Perception & psychophysics·2012
Same journal

Auditory property detectors and processing place features in stop consonants.

Perception & psychophysics·2012
Same journal

Visual working memory for line orientations and face identities.

Perception & psychophysics·2008
See all related articles

Perceived lightness is influenced by surrounding brightness. Experiments show that higher luminance darkens targets regardless of proximity, supporting global anchoring over local contrast theories.

Area of Science:

  • Visual Perception
  • Psychophysics
  • Computational Neuroscience

Background:

  • A target's perceived lightness can be reduced by adjacent higher luminance areas.
  • This phenomenon is often attributed to local lateral inhibition (contrast effects).
  • An alternative global theory proposes luminance anchoring, where the highest luminance sets the white level.

Purpose of the Study:

  • To differentiate between local contrast and global anchoring mechanisms in perceived lightness.
  • To investigate the role of spatial proximity in luminance-dependent darkening effects.
  • To assess the strength of edge integration processes in global anchoring.

Main Methods:

  • Experimental manipulation of target and surrounding luminance levels.
  • Comparison of perceived darkening effects on adjacent versus remote targets.

Related Experiment Videos

  • Quantitative assessment of luminance-induced lightness changes.

    • Main Results:

    • No significant difference in darkening effect was observed between adjacent and remote targets.
    • The introduction of higher luminance consistently reduced perceived lightness irrespective of spatial arrangement.
    • These findings indicate a dominant role for global processes over local ones.

    Conclusions:

    • The darkening effect on perceived lightness is primarily driven by global luminance anchoring, not local contrast.
    • Edge integration processes enabling remote luminance comparisons are robust and effective.
    • This supports a global framework for understanding visual adaptation and lightness perception.