Rf 0.58 protein in Helix command neurons during learning

At early stages of aversive conditioning in Helix, a most considerable increase in the acid brain-specific protein Rf 0.58 occurred in LPa3 and PPa3 neurones. Later the content of this protein decreased in the PPa3 but went on increasing in LPa3. In sham learning, the protein content did not increase so obviously. Hence the protein Rf 0.58 metabolism in individual neurones of the snail CNS correlates with the draw step of receptor and effector fields in avoidance conditioning.