![]() Please note that insulated axons are not entirely insulated, the axons are only insulated at every given interval for a certain length (in measurement of distance). Insulated Axons allows extremely high velocity of electrical signals to propagate from Point A to Point B. There are mainly two different types of Axons, insulated and non-insulated. This is a very sloppy analysis which ignores biophysical constraints but I think that we have an extremal optimisation problem here.Īxons are used to transfer electrical signals from Point A to Point B.ĭendrites are for receiving electrical signals from different neuron cells via their respective Axons. This becomes an extremal optimisation problem where there are specific constraints on the minimal axon thickness, the minimal dendrite thickness and an upper-bound on the average number of dendrites that fan out of a given axon.If we suppose that most neurons are limited to a volume V, give or take epsilon volume, and the function of axons is to carry a signal over a large distance whereas the function of dendrites is to integrate information from different sources then a semi-spherical radiation of dendrites should be the norm.My primitive back-of-the-envelope analysis involves the following: I am not a biophysicist by training but I wonder whether there might be existing publications that have shed light on this question. Cian O'Donnell, a British neuroscientist, originally asked this question on Twitter.
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