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Journal Article

Regulation of synaptic efficacy by coincidence of postsynaptic APs and EPSPs

MPS-Authors
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Markram,  Henry
Department of Cell Physiology, Max Planck Institute for Medical Research, Max Planck Society;

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Sakmann,  Bert
Department of Cell Physiology, Max Planck Institute for Medical Research, Max Planck Society;

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http://www.sciencemag.org/cgi/reprint/275/5297/213.pdf
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http://dx.doi.org/10.1126/science.275.5297.213
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Citation

Markram, H., Lübke, J., Frotscher, M., & Sakmann, B. (1997). Regulation of synaptic efficacy by coincidence of postsynaptic APs and EPSPs. Science, 275(5297), 213-215. doi:10.1126/science.275.5297.213.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-C3B0-7
Abstract
Activity-driven modifications in synaptic connections between neurons in the neocortex may occur during development and learning. In dual whole-cell voltage recordings from pyramidal neurons, the coincidence of postsynaptic action potentials (APs) and unitary excitatory postsynaptic potentials (EPSPs) was found to induce changes in EPSPs. Their average amplitudes were differentially up- or down-regulated, depending on the precise timing of postsynaptic APs relative to EPSPs. These observations suggest that APs propagating back into dendrites serve to modify single active synaptic connections, depending on the pattern of electrical activity in the pre- and postsynaptic neurons