Skip to main content
A Computational Theory for the Emergence of Grammatical Categories in Cortical Dynamics
Frontiers in Neural Circuits
  • Dario Dematties, University of Buenos Aires
  • Silvio Rizzi, Argonne National Laboratory
  • George K. Thiruvathukal, Loyola University Chicago
  • Mauricio D Perez, Uppsala Universitet
  • Alejandro Javier Wainselboim, University of Buenos Aires
  • Bonifacio Silvano Zanutto, University of Buenos Aires
Document Type
Publication Date
Publisher Name

A general agreement in psycholinguistics claims that syntax and meaning are unified precisely and very quickly during online sentence processing. Although several theories have advanced arguments regarding the neurocomputational bases of this phenomenon, we argue that these theories could potentially benefit by including neurophysiological data concerning cortical dynamics constraints in brain tissue. In addition, some theories promote the integration of complex optimization methods in neural tissue. In this paper we attempt to fill these gaps introducing a computational model inspired in the dynamics of cortical tissue. In our modelling approach, proximal afferent dendrites produce stochastic cellular activations, while distal dendritic branches–on the other hand–contribute independently to somatic depolarization by means of dendritic spikes, and finally, prediction failures produce massive firing events preventing formation of sparse distributed representations. The model presented in this paper combines semantic and coarse-grained syntactic constraints for each word in a sentence context until grammatically related word function discrimination emerges spontaneously by the sole correlation of lexical information from different sources without applying complex optimization methods. By means of support vector machine techniques, we show that the sparse activation features returned by our approach are well suited–bootstrapping from the features returned by Word Embedding mechanisms–to accomplish grammatical function classification of individual words in a sentence. In this way we develop a biologically guided computational explanation for linguistically relevant unification processes in cortex which connects psycholinguistics to neurobiological accounts of language. We also claim that the computational hypotheses established in this research could foster future work on biologically-inspired learning algorithms for natural language processing applications.

Electronic ISSN: 1662-5110

Author Posting © The Authors, 2020. This article is posted here by permission of the Authors for personal use, not for redistribution. The article was published in Frontiers in Neural Circuits, March 2020,

Creative Commons License
Creative Commons Attribution 4.0
Citation Information
Dario Dematties, Silvio Rizzi, George K. Thiruvathukal, Mauricio D. Perez, Alejandro Wainselboim, and Bonifacio S. Zanutto, A Computational Theory for the Emergence of Grammatical Categories in Cortical Dynamics, Frontiers in Neural Circuits, 10.3389/fncir.2020.00012.