Thomas, Michael S.C. (2008) Ageing, plasticity, and cognitive reserve in connectionist networks. In: 30th Annual Meeting of the Cognitive Science Society, 23-26 July 2008, Washington, U.S..
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Neurocomputational modeling has suggested that a range of mechanisms can lead to reductions in functional plasticity across development (Thomas & Johnson, 2006). In this paper, we consider whether ageing might also produce a reduction in plasticity. Marchman’s (1993) model of damage and recovery in past tense formation was extended to incorporate the two main proposals for implementing effects of ageing: altered neuromodulation and connection loss. Simulations showed that ageing did reduce plasticity (as assessed by the system’s ability to recover from damage) but that effects were modulated by (a) the mechanism used to implement ageing, (b) problem type, and (c) pre-existing levels of cognitive reserve.
|Item Type:||Conference or Workshop Item (Paper)|
|Additional Information:||Published in: Love, B.C., McRae, K. and Sloutsky, V.M. (eds), 2008. Proceedings of the 30th Annual Conference of the Cognitive Science Society. Austin, U.S.: Cognitive Science Society. ISBN: 9780976831846|
|Keyword(s) / Subject(s):||ageing, plasticity, compensation, critical and sensitive periods, brain damage, recovery, cognitive reserve|
|School or Research Centre:||Birkbeck Schools and Research Centres > School of Science > Psychological Sciences|
|Depositing User:||Sarah Hall|
|Date Deposited:||22 Mar 2012 09:41|
|Last Modified:||17 Apr 2013 12:33|
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