Hi. I am currently working on my undergraduate thesis on neural networks and
mathematical models. I have been using the backpropagation algorithm and have
noticed several references to its biological impausibility as one main
disadvatage. I am taking a brain course and our professor mentioned retrograde
messengers , nitric oxide and"back talking" in methods of learning such as
classicalical conditioning. To me this would seem to suggest that perhaps the
backpropagation method is not entirely biologically implausible...does anyone
have any information about this topic or else any references to papers which
discuss retrograde messengers and its backward synaptic directions? Thanks in
advance. Gillian Sanders
