Two excerpts from the one article.
My understanding of this excerpt is that the amygdala is using its own memories:
The amygdala learns how to respond to various stimuli based on it’s reference to implicit memory and makes decisions on how to initiate an emotional reaction to such stimuli. The emotional memory learned and utilised by the amygdala is implicit or unconscious and is in contrast with explicit (declarative) memory that is processed by the hippocampus.
My understanding of this excerpt is that the amygdala is using the memories of the hippocampus:
Incoming information goes to the thalamus and then directly to the amygdala while another slower path goes to the neocortex. If the amygdala perceives the record of experiences in the hippocampus matches incoming information, and the amygdala judges that the stimuli is a fight, flight or freeze situation