Experiments show that the hippocampus area of the brain [part of the limbic system] is the access or gateway into the whole emotional experience. Almost every variety of peptide receptor is found in the hippocampus. Through the peptide network, which is anything that has peptide receptors on it, you can access different memories, mood states or developmental stages. Strong emotions are the key variable that make us bother to remember things.
There is a lot of evidence that memory occurs at the point of synapse, there are changes that take place in the receptors. The sensitivity of the receptors are part of memory and pattern storage. But the peptide network expends beyond the hippocampus, to organs, tissue, skin, muscle and endocrine glands. They all have peptides receptors on them and can access and store emotional information. This means this emotional memory is stored in many places in the body, not just the brain. The autonomic nervous system is pivotal to this entire understanding. Its importance is much more subtle than has been thought. Every peptide that I have every mapped and more can be found in the autonomic nervous system. There is an emotional coding to the way our autonomic patterns are elaborated.