Dopaminergic antagonists prevent long-term maintenance of posttetanic LTP in the CA1 region of rat hippocampal slices.

By U. Frey, H. Schroeder, H. Matthies. 1990

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Tag-Trigger-Consolidation: A Model of Early and Late Long-Term-Potentiation and Depression (2008, background): “addition a phasic dopamine component is induced in standard tagging experiments in hippocampal slices, because of costimulation of dopaminergic inputs during extracellular stimulation of presynaptic fibers [40].”
Generalization of value in reinforcement learning by humans (2012, background): “Conversely, value information in the hippocampus may arrive via significant projections from midbrain dopaminergic neurons of the ventral tegmental area (Dahlström & Fuxe, 1964; Swanson, 1982; Frey et al., 1990; Gasbarri et al., 1994; Huang & Kandel, 1995; Otmakhova & Lisman, 1996).”
The dendritic branch is the preferred integrative unit for protein synthesis-dependent LTP (2011, background): “It is well established that this L-LTP is dependent on dopamine receptor 1 (D1R) class activation (Frey et al., 1990, 1991; O’Carroll and Morris, 2004; Otmakhova and Lisman, 1996; Sajikumar and Frey, 2004; Sajikumar et al., 2008; Smith et al., 2005; Swanson-Park et al., 1999) and the PKA pathway…”
Frontiers in Synaptic Neuroscience Synaptic Neuroscience (unknown): “…plasticity ranging from short-term plasticity (ms) (for review see: Lovinger, 2010) to long-term plasticity (hours) (Neuman and Harley, 1983; Frey et al., 1990; Huerta and Lisman, 1993; Thomas et al., 1996), to experience-dependent plasticity (Bear and Singer, 1986; Kilgard and Merzenich,…”
States of curiosity modulate hippocampus-dependent learning via the dopaminergic circuit (2014, background): “Blockade of D1 receptors, in turn, can inhibit hippocampal synaptic plasticity (e.g., Frey et al., 1990; O’Carroll and Morris, 2004).”
Integrating Memories in the Human Brain: Hippocampal–Midbrain Encoding of Overlapping Events (2008, background): “, 1994; Swanson, 1982), where dopamine has been shown to modulate plasticity (Frey et al., 1990; Morris et al., 2003; Otmakhova and Lisman, 1996).”
The principal features and mechanisms of dopamine modulation in the prefrontal cortex. (2004, background): “LTP Within the hippocampus where the bulk of LTP/LTD studies were first conducted, the DA D1 antagonist (SCH23390), protein synthesis inhibitor anisomysin, or competitive PKA inhibitor Rp-cAMP prevented the maintenance of the late phase (>3 h) LTP of CA1 field EPSPs evoked by tetanic stimulation of ”
Dopamine: a potential substrate for synaptic plasticity and memory mechanisms. (2003, background): “Only one study on CA1 slices using [14C] DA has shown that tetanization produces a significantly enhanced release of DA (Frey et al., 1990).”
Synaptic Consolidation: From Synapses to Behavioral Modeling (2015, background): “Experimental work (Frey et al., 1990; Sajikumar and Frey, 2004b; Lisman and Grace, 2005) has linked the production of PRP and the maintenance of memory to the presence of neuromodulators such as dopamine.”