We introduce two-stage-dynamics neuron, and discuss the relationship between recall dynamics and storage dynamics of associative memory. In conventional studies of neural nets, recall and storage dynamics have been treated separately. But recent studies on two-stage neuron revealed their close relationship. We discuss equivalence and differences of those dynamics that might be interesting to be noted from experimental as well as theoretical points of view. Although this paper focuses on associative memory, the kind of equivalence as is shown here could also be seen in other types of neural nets.