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la carrà faceva indovinare i piselli..io invece i neuroni ... quanti ce ne saranno ancora funzionanti nel contenitore???
Neurons are stimulated in various ways. There are some specialized neurons that convert the physical energy of our environment into a neural signal. These neurons are called receptors. The receptors are the ones found in the retina and are responsible for converting light energy to an electrochemical neural signal for vision.
We have noted elsewhere that when light (a photon) is absorbed by photopigments in the outersegment of our receptors it causes the photopigment to change its shape; a process called isomerization. When this isomerization occurs, an electrophysiological process is initiated that results in signals being sent through our retina and up into the brain. The end result is that we say that "we saw something."