Invertebrate Learning and Memory: Chapter 20. Molecular and Cellular Mechanisms of Classical Conditioning in the Feeding System of Lymnaea

Invertebrate Learning and Memory: Chapter 20. Molecular and Cellular Mechanisms of Classical Conditioning in the Feeding System of Lymnaea
ISBN-10
0128071680
ISBN-13
9780128071687
Series
Invertebrate Learning and Memory
Category
Medical
Pages
600
Language
English
Published
2013-06-18
Publisher
Elsevier Inc. Chapters
Author
György Kemenes

Description

Lymnaea provides highly valuable experimental models for top-down analyses of associative learning and memory. Using classical conditioning paradigms, molecular mechanisms of consolidation, maintenance, retrieval, and reconsolidation of associative memory have been investigated. Long-term memory (LTM) forms after multitrial reward and aversive conditioning but, unusually, also after single-trial reward conditioning (“flashbulb memory”). Molecular mechanisms of LTM involve highly conserved signaling pathways (NO/cGMP, cAMP/PKA, MAPK, NMDA receptors, and CaMKII), transcriptional regulation of gene expression by CREB and C/EBP, and new protein synthesis. Cellular mechanisms of LTM involve synaptic or nonsynaptic plasticity in key modulatory interneurons of the feeding network. Importantly, a number of molecular processes involved in LTM have been traced from the behavioral level to single identified neurons.

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