Answer:
there are different forms of memories and they are also encoded in the brain in very different manners. memory is a network of connected elements. Whenever one is activated, all this network of associated neurons becomes active. All of these elements are bundled in an episode, in a memory, in a neural network that encodes all of these elements. This also explains why, in some cases, some irrelevant elements may trigger an entire memory, often with very strong emotional components.
Hope it helps
