Modeling spontaneous activity across an excitable epithelium: support for a coordination scenario of early neural evolution
© de Wiljes et al. 2015
Published: 18 December 2015
The reason why nervous systems first arose is an open question. Internal coordination models hold that nervous systems evolved initially as a device to coordinate internal activity, enabling multicellular effectors. They stress the use of multicellular contractility as an effector for motility: some sort of coordinative structure would have been necessary to have multicellular effectors in the first place. A recent example of such a model, the skin brain thesis, suggests that excitable epithelia using chemical signaling are a potential candidate as a nervous system precursor.
Our results show that basic internal coordination as proposed by the skin brain thesis could have arisen in this potential nervous system precursor, providing support that this configuration may have played a role as a proto-neural system and requires further investigation.
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