Abstract

TABULLO, Ángel; IORIO, Alberto; ZANUTTO, Silvano  and  WAINSELBOIM, Alejandro Javier. Do the elements of a combinatorial category constitute an equivalence class? Behavioral and neurobiological evidences. Rev Arg Cs Comp. [online]. 2019, vol.11, n.2, pp.23-35.  Epub Apr 07, 2019. ISSN 1852-4206.

It has been proposed that there is a relation between the capacity to acquire language and equivalence relations. Previous studies show that members of an equivalence class transfer combinatorial properties within an artificial grammar. Reciprocally, in the present work we analyzed whether, after training in an artificial grammar, stimuli with the same combinatorial properties verify properties of an equivalence class. Results show that stimuli of a same combinatorial class form a functional class that verifies the properties of equivalence (i.e. reflexivity; symmetry and transitivity). Processing these relations generates an N400 potential that is related to the number of nodal stimuli between stimuli pairs. This result could be explained in terms of a proactive system that extracts and retains statistical regularities of stimuli; connects new stimuli with relevant representations previously acquired and employs these associations to generate predictions of future events.

Keywords : artificial grammar; equivalence relations; evoked potentials; function transfer.

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