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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Abstract

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.

Item Type:
Contribution in Book/Report/Proceedings
Additional Information:
Not within 3 months of acceptance, but is within 3 months of publication
Subjects:
ID Code:
87123
Deposited By:
Deposited On:
26 Jul 2017 08:06
Refereed?:
Yes
Published?:
Published
Last Modified:
29 Sep 2020 06:19