Fig. 6. Juvenile `high responders' do not exhibit LTM. (A) Data from the 20
juvenile `high responders' previously plotted in
Fig. 4 do not demonstrate LTM
even though they received the same number of reinforcing stimuli as the adults
in B. (B) The data from 20 randomly chosen adult snails from the data in
Fig. 4 show LTM when tested 24
h after the last training session (MT).