Visual phototransduction
= Visual phototransduction
Conversion of absorbed <light> into a <photoreceptor> response. In <vertebrate> rods and <cone cells>, activation of visual <pigment> changes a signaling cascade and light-sensitive membrane current, typically hyperpolarizing the <cell> and changing transmitter release. A <receptor> voltage, ganglion-cell spikes and a reported <color> are distinct measurement levels.