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Associative memory in cortical circuits has been held as a major mechanism for content-addressable memory. Hebbian synapses implement associative memory efficiently when storing sparse binary activity patterns. However, in models of sensory processing, representations are graded and not binary. Thus, it has been an unresolved question how sensory computation could exploit cortical associative memory...
Synfire chain models store and retrieve hetero-associative sequences of firing patterns, thereby explaining basic aspects of the neuronal processing of temporal information. Existing models were based on McCulloch–Pitts or integrate & fire neurons and therefore neglect most physiological properties of real neurons. Here, we study a model with conductance-based neurons and both, hetero- and auto-associative...
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