Sort of answer to my own questions

I looked back at chapt 8 of Ledoux and he does talk about repressed memories and the hippocampus. He mentions that the memory loss could be due to damage to the hippocampus because of the stress, which we discussed in class. But what about dissociative behavior or denial?Is what we term "consciousness" that subjective? One who dissociates from an experience or denies what we would call conscious facts-how can we explain this biologically.