期刊
NETWORK-COMPUTATION IN NEURAL SYSTEMS
卷 17, 期 1, 页码 31-41出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/09548980500286797
关键词
hippocampus; excitability; trace conditioning; Hebbian learning
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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