Journal
NETWORK-COMPUTATION IN NEURAL SYSTEMS
Volume 17, Issue 1, Pages 31-41Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/09548980500286797
Keywords
hippocampus; excitability; trace conditioning; Hebbian learning
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Experiments have shown that the intrinsic excitability of neurons is not constant, but varies with physiological stimulation and during various learning paradigms. We study a model of Hebbian synaptic plasticity which is supplemented with intrinsic excitability changes. The excitability changes transcend time delays and provide a memory trace. Periods of selective enhanced excitability can thus assist in forming associations between temporally separated events, such as occur in trace conditioning. We demonstrate that simple bidirectional networks with excitability changes can learn trace conditioning paradigms.
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