Accepted author manuscript, 262 KB, PDF document
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Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
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TY - GEN
T1 - Computational Exploration of Lexical Development in Down Syndrome
AU - Tovar Y Romo, Angel Eugenio
AU - Westermann, Gert
N1 - Not within 3 months of acceptance, but is within 3 months of publication
PY - 2017/7/20
Y1 - 2017/7/20
N2 - 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 lexicaldevelopment. 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.
AB - 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 lexicaldevelopment. 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.
KW - computational modelling
KW - developmental disorder
KW - Neural network
KW - Down syndrome
M3 - Conference contribution/Paper
SP - 1199
EP - 1204
BT - Proceedings of the 39th Annual Conference of the Cognitive Science Society
A2 - Gunzelmann, Glenn
A2 - Howes, Andrew
A2 - Tenbrink, Thora
A2 - Davelaar, Eddy
PB - Cognitive Science Society
CY - London
ER -