Computational Exploration of Lexical Development in Down Syndrome

Tovar Y Romo, Angel Eugenio and Westermann, Gert (2017) Computational Exploration of Lexical Development in Down Syndrome. In: Proceedings of the 39th Annual Conference of the Cognitive Science Society. Cognitive Science Society, London, pp. 1199-1204. ISBN 9780991196760

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Research on lexical development in Down syndrome (DS) has emphasized a dissociation between language comprehension and production abilities, with production of words being relatively more impaired than comprehension. Current theories stress the role of associative learning on lexical development. However, there have been no attempts to explain the atypical lexical development in DS based on atypical associative learning. The long-term potentiation (LTP) and long-term depression (LTD) of synapses, underlying associative learning, are altered in DS. Here we present a neural network model that instantiates notions from neurophysiological studies to account for the disparities between lexical comprehension and production in DS. Our simulations show that an atypical LTP/LTD balance affects comprehension and production differently in an associative model of lexical development.

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Not within 3 months of acceptance, but is within 3 months of publication
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26 Jul 2017 08:06
Last Modified:
21 Sep 2023 03:52