>"there is no circuitry for a signal to travel in the opposite direction in a nerve." I believe the term you are looking for is "dendro-axonic" (or try dendro-

>"there is no circuitry for a signal to travel in the opposite direction in a nerve." I believe the term you are looking for is "dendro-axonic" (or try dendro-axonal, etc) transmission/synapse: http://www.sciencedirect.com/science/article/pii/0006899379903950 http://www.sciencedirect.com/science/article/pii/00068993799... https://www.ncbi.nlm.nih.gov/pubmed/37984 https://www.ncbi.nlm.nih.gov/pubmed/37984 I would caution that, in general, you can find "evidence" in the literature for literally anything you could dream up when it comes to neuroscience though. So who knows in this case.