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  • Title: [Work of the human visual system. I. Adequate visual stimulus].
    Author: Iarbus AL.
    Journal: Biofizika; 1975; 20(5):916-9. PubMed ID: 1203280.
    Abstract:
    It is shown that the adequate stimulus permitting to detect the presence of colour differentiation in the visual field is the change of relative space-time differences of light actions in different retinal points. Differences only in space or only in time are not sufficient for perception.
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