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NOTE ON THE EXCITATION AND INHIBITION OF LUMINESCENCE IN BERŒ

1. The ions of Ca and K condition general luminescence, and are therefore necessary to the conduction of the impulse. 2. In van't Hoff's solution from which Mg is omitted, Berœ shows hyperirritability with respect to luminescence. This is the result of the action of Ca and K ions unantagon...

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Detalles Bibliográficos
Autores principales: Heymans, C., Moore, A. R.
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1925
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2140713/
https://www.ncbi.nlm.nih.gov/pubmed/19872141
Descripción
Sumario:1. The ions of Ca and K condition general luminescence, and are therefore necessary to the conduction of the impulse. 2. In van't Hoff's solution from which Mg is omitted, Berœ shows hyperirritability with respect to luminescence. This is the result of the action of Ca and K ions unantagonized by Mg. 3. The luminescent material spread on filter paper does not show luminescence in sea water, NaCl, MgCl(2), or saccharose solutions isotonic with sea water. In solutions of CaCl(2), SrCl(2), BaCl(2), KCl, and K(2)SO(4) the indicator paper glows with a bright luminescence. 4. In dark adapted Berœ, luminescence is inhibited by a certain quantity of light. This quantity has an average value of 57,285 meter-candle-minutes, which is twelve times the value given by Mnemiopsis.