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Selective enhancement of recall through plasticity modulation in an autoassociative memory
KTH, Superseded Departments, Numerical Analysis and Computer Science, NADA.ORCID iD: 0000-0002-2358-7815
2001 (English)In: Neurocomputing, ISSN 0925-2312, E-ISSN 1872-8286, Vol. 38, 867-873 p.Article in journal (Refereed) Published
Abstract [en]

The strength of a memory trace is modulated by a variety of factors such as arousal, attention, context, type of processing during encoding, salience and novelty of the experience. Some of these factors can be modeled as a variable plasticity level in the memory system, controlled by arousal or relevance-estimating systems. We demonstrate that a Bayesian confidence propagation neural network with learning time constant modulated in this way exhibits enhanced recall of an item tagged as salient. Proactive and retroactive inhibition of other items is also demonstrated as well as an inverted U-shape response to overall plasticity.

Place, publisher, year, edition, pages
2001. Vol. 38, 867-873 p.
Keyword [en]
memory modulation, von Restorff effect, BCPNN, humans
Identifiers
URN: urn:nbn:se:kth:diva-20690ISI: 000169129200116OAI: oai:DiVA.org:kth-20690DiVA: diva2:339386
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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