Figure 2.

The new group-training protocol replicates previous findings that distributed training at a short ISI does not produce long-term memory for habituation training (A) and that heat shock given during the rest periods that separate the distributed training blocks eliminates long-term memory (B). (A) The mean response magnitude for trained groups (open bars) that received habituation training at a 10-sec ISI using either a massed or distributed training protocol compared with their respective single-tap matched control group (solid bars). Mean response magnitudes are expressed as percent control group response. There was no difference in average response magnitude between either pair of trained and control groups. (B) Mean response magnitudes for groups that received distributed training with heat shock given in the first 40 min of each 1-h rest period (open bar) do not differ from mean response magnitudes of the matched control group that also received heat shock (solid bar). A control condition where trained worms received distributed training and then underwent 21°C (room temperature)-shock during the rest periods between training blocks (open bar) show significantly decreased mean response magnitudes compared with its matched control group (solid bar). Mean response magnitudes are expressed as percent control group response. (*) P<0.05.