When writing a journal paper, we are expected to write in third person. But when I present some assumptions of other researchers and then want to say that I disagree with that and then present my own hypothesis, how do I write it? 

Example:  

Artificial neural networks store neural weights, which are a generalized way of memorizing and abstracting training data, similar to the neurons of the human brain.  

I disagree with that because I theorize that memories are not stored in the neurons. I don't have any evidence, but can provide my theories about how memory storage actually works. 

But I can't start writing it as "My hypothesis is that...", because it isn't in third person. What is the right way to write it?