Long‐term synaptic plasticity between pairs of individual CA3 pyramidal cells in rat hippocampal slice cultures

作者: Dominique Debanne , Beat H. Gähwiler , Scott M. Thompson

DOI: 10.1111/J.1469-7793.1998.237BU.X

关键词:

摘要: 1. Long-term potentiation (LTP) and depression (LTD) were investigated at synapses formed by pairs of monosynaptically connected CA3 pyramidal cells in rat hippocampal slice cultures. 2. An N-methyl-D-aspartate (NMDA) receptor-mediated component the unitary EPSP, elicited resting membrane potential response to single action potentials an individual cell, could be isolated pharmacologically. 3. Associative LTP was induced when presynaptic repeatedly paired with 240 ms postsynaptic depolarizing pulses that evoked five twelve or near peak EPSP. induction prevented NMDA receptor antagonist. 4. LTD a certain delay after either potentials. The time window within which activity had occur for dependent on amount depolarization. if pre- occurred synchronously. 5. Homosynaptic 3 Hz tetanization neuron min blocked 6. Depotentiation produced stimulation protocols elicit homosynaptic associative LTD. 7. Recurrent excitatory between display depression. sign change synaptic strength is function relative timing

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