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Updated: May 30, 2026

Improved Preparation and Preservation of Hippocampal Mouse Slices for a Very Stable and Reproducible Recording of Long-term Potentiation
Published on: June 26, 2013
A neoHebbian framework for episodic memory; role of dopamine-dependent late LTP
John Lisman1, Anthony A Grace, Emrah Duzel
1Department of Biology and Volen Center for Complex Systems, Brandeis University, Waltham, MA 02454-9110, USA. Lisman@brandeis.edu
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According to the Hebb rule, the change in the strength of a synapse depends only on the local interaction of presynaptic and postsynaptic events. Studies at many types of synapses indicate that the early phase of long-term potentiation (LTP) has Hebbian properties. However, it is now clear that the Hebb rule does not account for late LTP; this requires an additional signal that is non-local. For novel information and motivational events such as rewards this signal at hippocampal CA1 synapses is mediated by the neuromodulator, dopamine. In this Review we discuss recent experimental findings that support the view that this 'neoHebbian' framework can account for memory behavior in a variety of learning situations.
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