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Neural Computation

Summer 1991, Vol. 3, No. 2, Pages 201-212
(doi: 10.1162/neco.1991.3.2.201)
© 1991 Massachusetts Institute of Technology
A Biologically Supported Error-Correcting Learning Rule
Article PDF (599.45 KB)

We show that a form of synaptic plasticity recently discovered in slices of the rat visual cortex (Artola et al. 1990) can support an error-correcting learning rule. The rule increases weights when both pre- and postsynaptic units are highly active, and decreases them when pre-synaptic activity is high and postsynaptic activation is less than the threshold for weight increment but greater than a lower threshold. We show that this rule corrects false positive outputs in feedforward associative memory, that in an appropriate opponent-unit architecture it corrects misses, and that it performs better than the optimal Hebbian learning rule reported by Willshaw and Dayan (1990).