In research topics of neurophotonics, the best way of determination of neural network in foetus is by using voltage-sensitive dyes instead of placing diodes. But how does it actually work? Sorry if the answer is too much descriptive, so any link or short point type answers are also welcome.
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$\begingroup$ That's a question for biology, not physics. $\endgroup$– CuriousOneCommented May 22, 2015 at 7:23
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$\begingroup$ Sorry but it comes under neurophotonics. It is definitely the conjunction of photonics and neurology and has Spie recognition for being a subject of optics $\endgroup$– Demietra95Commented May 22, 2015 at 7:32
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1$\begingroup$ SPIE is a technical organization and it doesn't define what belongs into physics proper. If you have a question about physical principles, e.g. how fluorescence works (including voltage sensitive dyes), then you might expect to get good answers. How to use fluorescent dyes in a biological application, that's a question for biologists. $\endgroup$– CuriousOneCommented May 22, 2015 at 7:37
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$\begingroup$ I didn't ask how to use it. I asked for principles or mechanism upon which it works. I guess that comes under physics. And actually there is no particular area for neurophotonics. So had to post it here. $\endgroup$– Demietra95Commented May 22, 2015 at 7:41
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$\begingroup$ Your question clearly asks how these dyes determine neural networks in a foetus, which is a biological question (the closes a physicist ever comes to those things is by having an egg in the morning). I think a better question would have been "How do voltage sensitive dyes work?" without any reference to biology. Is that what you want to know? $\endgroup$– CuriousOneCommented May 22, 2015 at 7:48
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