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First Words Learning: A Cortical Model

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Abstract

Humans come to recognize an infinite variety of natural and man-made objects in their lifetime and make use of sounds to identify and categorize them. How does this lifelong learning process begin? Many hypotheses have been proposed to explain the learning of first words with some emerging from the particular characteristics observed in child development. One is the peculiar trend in the speed with which words are learned, which have been referred to in the literature as “fast mapping”. We present a neural network model trained in stages that parallel developmental ones and that simulates cortical processes of self-organization during an early crucial stage of first word learning. This is done by taking into account strictly visual and acoustic perceptions only. The results obtained show evidence of the emergence in the artificial maps used in the model, of cortical functions similar to those found in the biological correlates in the brain. Evidence of non-catastrophic fast mapping based on the quantity of objects and labels gradually learned by the model is also found. We interpret these results as meaning that early stages of first word learning may be explained by strictly perceptual learning processes, coupled with cortical processes of self-organization and of fast mapping. Specialized word-learning mechanisms thus need not be invoked, at least not at an early word-learning stage.

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Authors and Affiliations

  1. Department of Cognitive Science, v. Concezione 8, Messina, Italy

    Alessio Plebe & Vivian De la Cruz

  2. Laboratory of Cognitive Science, viale Andrea Doria 6, 95125, Catania, Italy

    Marco Mazzone

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  1. Alessio Plebe
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  2. Marco Mazzone
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  3. Vivian De la Cruz
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Correspondence to Alessio Plebe.

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Plebe, A., Mazzone, M. & De la Cruz, V. First Words Learning: A Cortical Model. Cogn Comput 2, 217–229 (2010). https://doi.org/10.1007/s12559-010-9044-5

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