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Science 17 September 1999:
Vol. 285. no. 5435, pp. 1911 - 1914
DOI: 10.1126/science.285.5435.1911
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Reports

Coincident Induction of Long-Term Facilitation in Aplysia: Cooperativity Between Cell Bodies and Remote Synapses

Carolyn M. Sherff, 1* Thomas J. Carew 12

Induction of long-term synaptic changes at one synapse can facilitate the induction of long-term plasticity at another synapse. Evidence is presented here that if Aplysia sensory neuron somata and their remote motor neuron synapses are simultaneously exposed to serotonin pulses insufficient to induce long-term facilitation (LTF) at either site alone, processes activated at these sites interact to induce LTF. This coincident induction of LTF requires that (i) the synaptic pulse occur within a brief temporal window of the somatic pulse, and (ii) local protein synthesis occur immediately at the synapse, followed by delayed protein synthesis at the soma.

Departments of
1 Psychology and
2 Cellular, Molecular and Developmental Biology, Yale University, New Haven, CT 06520-8205 USA.
*   To whom correspondence should be addressed. E-mail: carolyn.sherff{at}yale.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)