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GrassyBilbo BagginschoosewhichMike Hrynkow Recent comment authors
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Grassy
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Grassy

Yes, Every photoreceptor releases the same neurotransmitter—glutamate. However, the effect of glutamate differs in the bipolar cells, depending upon the type of receptor imbedded in that cell’s membrane. When glutamate binds to an ionotropic receptor, the bipolar cell will depolarize (and therefore will hyperpolarize with light as less glutamate is released). On the other hand, binding of glutamate to a metabotropic receptor results in a hyperpolarization, so this bipolar cell will depolarize to light as less glutamate is released. In essence, this property allows for one population of bipolar cells that gets excited by light and another population that gets… Read more »

Bilbo Baggins
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Bilbo Baggins

Hi ya Love

Every cell in your body is photo-receptive some are photochemically reactive as well
One can see with the heart through the eyes of knowledge!

choosewhich
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choosewhich

The skin is often considered to be photo receptive. You can actually do your own experiments to verify this.

One theory is that the pineal gland was once a third eye. Another theory is that the pineal gland is going to be a third eye.

Mike Hrynkow
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Mike Hrynkow

YES