Learning rules and network repair in spike-timing-based computation networks.

TitleLearning rules and network repair in spike-timing-based computation networks.
Publication TypeJournal Article
Year of Publication2004
AuthorsHopfield, JJ, Brody, CD
JournalProc Natl Acad Sci U S A
Date Published2004 Jan 06
KeywordsAction Potentials, Animals, Learning, Mammals, Models, Neurological, Nerve Net, Neuronal Plasticity, Olfactory Bulb, Smell, Synapses, Time Factors

<p>Plasticity in connections between neurons allows learning and adaptation, but it also allows noise to degrade the function of a network. Ongoing network self-repair is thus necessary. We describe a method to derive spike-timing-dependent plasticity rules for self-repair, based on the firing patterns of a functioning network. These plasticity rules for self-repair also provide the basis for unsupervised learning of new tasks. The particular plasticity rule derived for a network depends on the network and task. Here, self-repair is illustrated for a model of the mammalian olfactory system in which the computational task is that of odor recognition. In this olfactory example, the derived rule has qualitative similarity with experimental results seen in spike-timing-dependent plasticity. Unsupervised learning of new tasks by using the derived self-repair rule is demonstrated by learning to recognize new odors.</p>

Alternate JournalProc. Natl. Acad. Sci. U.S.A.
PubMed ID14694191
PubMed Central IDPMC314186
Grant ListR01 DC006104 / DC / NIDCD NIH HHS / United States
R01 DC06104-01 / DC / NIDCD NIH HHS / United States