Evidence map›Paper›PMID 28442402›Full record

ReviewNeuroscience and biobehavioral reviews2017

Chromatic clocks: Color opponency in non-image-forming visual function.

Manuel Spitschan, Robert J Lucas, Timothy M Brown

Abstract readReview
In one paragraph

Review in Neuroscience and biobehavioral reviews, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
2.6field-weighted citation impact, top 10% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

32 citing papers in PubMed, 61 citations in OpenAlex.

  1. Article
  2. Minimal Mimics and Maps of Natural Light for Mammals.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Cone-Opponent Ganglion Cells in the Primate Fovea Tuned to Noncardinal Color Directions.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Circadian rhythm entrainment of the jewel wasp,Proceedings. Biological sciences · 2023
    Article
  16. Article
  17. Article
  18. Article
  19. Does a Red House Affect Rhythms in Mice with a Corrupted Circadian System?International journal of molecular sciences · 2021
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 2 countries.

Manuel SpitschanStanford University, Department of Psychiatry & Behavioral Sciences, Stanford, CA, USA; VA Palo Alto Health Care System, Mental Illness Research Education and Clinical Center, Palo Alto, CA, USA. Electronic address: spitschan@stanford.edu.
Robert J LucasUniversity of Manchester, Faculty of Life Sciences, Manchester, United Kingdom.
Timothy M BrownUniversity of Manchester, Faculty of Life Sciences, Manchester, United Kingdom.
University of Manchester · GBStanford University · US

Funding

Scientific TransparencyP30EY001583 · NEI · UNIVERSITY OF PENNSYLVANIA · PI Qi N Cui · 1985 to 2026
$19.5M
COLOR CONSTANCY--REAL IMAGES AND EARLY VISUAL MECHANISMSR01EY010016 · NEI · UNIVERSITY OF PENNSYLVANIA · PI BRAINARD, DAVID H. · 1998 to 2018
$5.4M
Cortical Structure and Function in Blindness and following Restored VisionR01EY020516 · NEI · UNIVERSITY OF PENNSYLVANIA · PI AGUIRRE, GEOFFREY KARL · 2011 to 2015
$2.0M
NEI NIH HHS P30 EY001583NEI NIH HHS R01 EY010016NEI NIH HHS R01 EY020516
6 · The paper itself

Abstract

During dusk and dawn, the ambient illumination undergoes drastic changes in irradiance (or intensity) and spectrum (or color). While the former is a well-studied factor in synchronizing behavior and physiology to the earth's 24-h rotation, color sensitivity in the regulation of circadian rhythms has not been systematically studied. Drawing on the concept of color opponency, a well-known property of image-forming vision in many vertebrates (including humans), we consider how the spectral shifts during twilight are encoded by a color-opponent sensory system for non-image-forming (NIF) visual functions, including phase shifting and melatonin suppression. We review electrophysiological evidence for color sensitivity in the pineal/parietal organs of fish, amphibians and reptiles, color coding in neurons in the circadian pacemaker in mice as well as sporadic evidence for color sensitivity in NIF visual functions in birds and mammals. Together, these studies suggest that color opponency may be an important modulator of light-driven physiological and behavioral responses.

Indexed as

Circadian RhythmAnimalsColorHumansLightMiceNeuronsPhotic StimulationCircadian rhythmsColor opponencyColor visionNon-image-forming visionRetinaSleep-wake cycles

Identifiers

PMID28442402
PMCPMC5510539
OpenAlexW2605672976

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.