PMID- 12075001 OWN - NLM STAT- MEDLINE DCOM- 20021210 LR - 20191210 IS - 1072-0502 (Print) IS - 1072-0502 (Linking) VI - 9 IP - 3 DP - 2002 May-Jun TI - A new group-training procedure for habituation demonstrates that presynaptic glutamate release contributes to long-term memory in Caenorhabditis elegans. PG - 130-7 AB - In the experiments reported here we have developed a new group-training protocol for assessing long-term memory for habituation in Caenorhabditis elegans. We have replicated all of the major findings of the original single-worm protocol using the new protocol: (1) distributed training produced long-term retention of training, massed training did not; (2) distributed training at long interstimulus intervals (ISIs) produced long-term retention, short ISIs did not; and (3) long-term memory for distributed training is protein synthesis-dependent as it could be blocked by heat shock during the inter-block interval. In addition, we have shown that long-term memory for habituation is graded, depending on the number of blocks of stimuli in training. The inter-block interval must be >40 min for long-term retention of training to occur. Finally, we have tested long-term memory for habituation training in a strain of worms with a mutation in a vesicular glutamate transporter in the sensory neurons that transduce tap (eat-4). The results from these eat-4 worms indicate that glutamate release from the sensory neurons has an important role in the formation of long-term memory for habituation. FAU - Rose, Jacqueline K AU - Rose JK AD - Department of Psychology and Brain Research Centre, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada. FAU - Kaun, Karla R AU - Kaun KR FAU - Rankin, Catharine H AU - Rankin CH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Learn Mem JT - Learning & memory (Cold Spring Harbor, N.Y.) JID - 9435678 RN - 3KX376GY7L (Glutamic Acid) SB - IM MH - Animals MH - Caenorhabditis elegans/*physiology MH - Conditioning, Psychological/physiology MH - Glutamic Acid/*metabolism MH - Habituation, Psychophysiologic/*physiology MH - Memory/*physiology MH - Presynaptic Terminals/metabolism MH - Synaptic Transmission/physiology PMC - PMC182588 EDAT- 2002/06/21 10:00 MHDA- 2002/12/11 04:00 PMCR- 2003/05/01 CRDT- 2002/06/21 10:00 PHST- 2002/06/21 10:00 [pubmed] PHST- 2002/12/11 04:00 [medline] PHST- 2002/06/21 10:00 [entrez] PHST- 2003/05/01 00:00 [pmc-release] AID - 10.1101/lm.46802 [doi] PST - ppublish SO - Learn Mem. 2002 May-Jun;9(3):130-7. doi: 10.1101/lm.46802.