In 2000, Eric Kandel Received the Nobel Prize in Physiology

Essay

In 2000, Eric Kandel received the Nobel Prize in Physiology and Medicine, along with two other people for their "discoveries concerning signal transduction in the nervous system." Most of Kandel's work uncovered the contributions of the cAMP signal transduction pathway in memory formation in Aplysia. Why are the discoveries in Aplysia so important for our molecular understanding of learning and memory?
Where Does Learning Occur, and Where Is Memory Stored in the Brain?