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-Pupillit laajenevat, päästäen lisää valoa sisään
-Vaalentamattoman rodopsiinin regeneraatio
Valoisaan tottuminen
-Kalsium keskeinen
-Valoisaan astuminen hyperpolarisoi tappisolut, mutta ne alkavat pikkuhihljaa depolarisoitua -35mV:hen.
*Tämä johtuu siitä, että cGMP-gated natrium-kanavat päästävät myös kalsiumia läpi. Tällä kalsiumilla on inhibitorinen vaikutus guanylaattisyklaasiin, joka syntesisoi cGMP:tä. Kun cGMP-kanavat sulkeutuvat, myös kalsiumin sisäänotto vähenee ja näinollen cGMP syntesisointi lisääntyy. Näinollen kanavat aukeavat pikkuhiljaa, kun valon voimakkuus ei muutu.
**Tämä prosessi ei ole koko silmän laajuinen, vaan voi koskea vaikka vain yhtä tappisolua.
Miten aistimus syntyy
*VAIN GANGLIONCELLS AKTIOPOTENTIAALI
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