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Research Article

Brain Responses to Violet, Blue, and Green Monochromatic Light Exposures in Humans: Prominent Role of Blue Light and the Brainstem

  • Gilles Vandewalle,

    Affiliation: Cyclotron Research Centre, University of Liège, Liège, Belgium

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  • Christina Schmidt,

    Affiliation: Cyclotron Research Centre, University of Liège, Liège, Belgium

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  • Geneviève Albouy,

    Affiliation: Cyclotron Research Centre, University of Liège, Liège, Belgium

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  • Virginie Sterpenich,

    Affiliation: Cyclotron Research Centre, University of Liège, Liège, Belgium

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  • Annabelle Darsaud,

    Affiliation: Cyclotron Research Centre, University of Liège, Liège, Belgium

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  • Géraldine Rauchs,

    Affiliation: Cyclotron Research Centre, University of Liège, Liège, Belgium

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  • Pierre-Yves Berken,

    Affiliation: Hololab, Department of Physics, University of Liège, Liège, Belgium

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  • Evelyne Balteau,

    Affiliation: Cyclotron Research Centre, University of Liège, Liège, Belgium

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  • Christian Degueldre,

    Affiliation: Cyclotron Research Centre, University of Liège, Liège, Belgium

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  • André Luxen,

    Affiliation: Cyclotron Research Centre, University of Liège, Liège, Belgium

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  • Pierre Maquet mail,

    To whom correspondence should be addressed. E-mail: pmaquet@ulg.ac.be

    Affiliations: Cyclotron Research Centre, University of Liège, Liège, Belgium, Department of Neurology, Centre Hospitalier Universitaire de Liège (CHU), Liège, Belgium

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  • Derk-Jan Dijk

    Affiliation: Surrey Sleep Research Centre, University of Surrey, Guildford, United Kingdom

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  • Published: November 28, 2007
  • DOI: 10.1371/journal.pone.0001247

Reader Comments (4)

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Not a test of S-cone function?

Posted by RobertPOShea on 29 Nov 2007 at 03:15 GMT

Absence of color blindness was assessed by the 38 plate edition of Ishihara's Test for Color-Blindness (Kanehara Shupman Co., Tokyo, Japan)
http://plosone.org/article/info:doi/10.1371/journal.pone.0001247#article1.body1.sec2.sec1.p1

Does the 38-plate Ishihara Test diagnose abnormal S-cone function? I thought it was mainly for L- and M-cone function. Admittedly, abnormal S-cone function is rare.


RE: Not a test of S-cone function?

gvandewalle replied to RobertPOShea on 29 Nov 2007 at 17:46 GMT

It does include plates with violet-blue only. All subjects were able to distinguish violet from blue.