Repeated stimulation of feeding mechanoafferents in Aplysia generates responses consistent with the release of food

Between stimulus train plasticity of the fast EPSPs in naive animals. For EPSPs measured in the follower cells, changes in the distribution between increases (+), decreases (−), or lack of change (0) from one stimulus train to another. (A) Changes in EPSP amplitude from the first to the second stimulus train. (B) Changes in EPSP amplitude from the second to the third stimulus train. Data are shown separately for (1) changes in the first EPSP in a stimulus train, and (2) changes in the fifth EPSP in a stimulus train. Significant changes in the distribution are marked by an asterisk.