Ventral tegmental dopamine dysregulation prevents appetitive memory destabilization

腹侧被盖区多巴胺失调可防止食欲记忆不稳定

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作者:Amy C Reichelt, Marc T Exton-McGuinness, Jonathan L C Lee

Abstract

Through the process of reconsolidation, memories can be updated to maintain their relevance. To reconsolidate, a memory must first be destabilized in a process that we have hypothesized is initiated by a prediction error signal. Here we demonstrate that dysregulation of ventral tegmental area (VTA) signaling, which is thought to mediate prediction errors, prevented the destabilization of an appetitive goal-tracking memory in rats. We additionally show that intra-VTA infusion of either the competitive NMDA antagonist AP5 or the noncompetitive NMDA antagonist MK-801 does not selectively disrupt reconsolidation, indicating that the VTA may not be an important neural locus of reconsolidation-related neural plasticity.

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