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Bio-inspired models of memory capacity, recall performance and theta phase precession in the hippocampus

Bio-inspired models of memory capacity, recall performance and theta phase precession in the hippocampus,10.1109/IJCNN.2011.6033637,Vassilis Cutsuridi

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Bio-inspired models of memory capacity, recall performance and theta phase precession in the hippocampus  
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The hippocampus plays an important role in the encoding and retrieval of spatial and non-spatial memories. Much is known about the anatomical, physiological and molecular characteristics as well as the connectivity and synaptic properties of various cell types in the hippocampal circuits (1), but how these detailed properties of individual neurons give rise to the encoding and retrieval of memories remains unclear. Computational models play an instrumental role in providing clues on how these processes may take place. Here, we present three computational models of the region CA1 of the hippocampus at various levels of detail. Issues such as retrieval of memories as a function of cue loading, presentation frequency and learning paradigm, memory capacity, recall performance, and theta phase precession in the presence of dopamine neuromodulation and various types of inhibitory interneurons are addressed. The models lead to a number of experimentally testable predictions that may lead to a better understanding of the biophysical computations in the hippocampus.
Conference: International Symposium on Neural Networks - ISNN , pp. 3141-3148, 2011
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