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Emergence of prefrontal neuron maturation properties by training recurrent neural networks in cognitive tasks

By Yichen Henry Liu, Junda Zhu, Christos Constantinidis, Xin Zhou

Posted 16 Oct 2020
bioRxiv DOI: 10.1101/2020.10.15.339663

Working memory and response inhibition are functions that mature relatively late in life, after adolescence, paralleling the maturation of the prefrontal cortex. The link between behavioral and neural maturation is not obvious, however, making it challenging to understand how neural activity underlies the maturation of cognitive function. To gain insights into the nature of observed changes in prefrontal activity between adolescence and adulthood, we investigated the progressive changes in unit activity of Recurrent Neural Networks (RNNs) as they were trained to perform working memory and response inhibition tasks. These included increased delay period activity during working memory tasks, and increased activation in antisaccade tasks. These findings reveal universal properties underlying the neuronal computations behind cognitive tasks and explicate the nature of changes that occur as the result of developmental maturation. ### Competing Interest Statement The authors have declared no competing interest.

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