Syntax without language: Neurobiological evidence for cross-domain syntactic computations

Marco Tettamanti, Irene Rotondi, Daniela Perani, Giuseppe Scotti, Ferruccio Fazio, Stefano F. Cappa, Andrea Moro

Research output: Contribution to journalArticlepeer-review

Abstract

Not all conceivable grammars are realized within human languages. Rules based on rigid distances, in which a certain word must occur at a fixed distance from another word, are never found in grammars of human languages. Distances between words are specified in terms of relative, non-rigid positions. The left inferior frontal gyrus (IFG) (Broca's area) has been found to be involved in the computation of non-rigid but not of rigid syntax in the language domain. A fundamental question is therefore whether the neural activity underlying this non-rigid architecture is language-specific, given that analogous structural properties can be found in other cognitive domains. Using event-related functional magnetic resonance imaging (fMRI) in sixteen healthy native speakers of Italian, we measured brain activity for the acquisition of rigid and non-rigid syntax in the visuo-spatial domain. The data of the present experiment were formally compared with those of a previous experiment, in which there was a symmetrical distinction between rigid and non-rigid syntax in the language domain. Both in the visuo-spatial and in the language domain, the acquisition of non-rigid syntax, but not the acquisition of rigid syntax, activated Brodmann Area 44 of the left IFG. This domain-independent effect was specifically modulated by performance improvement. Thus, in the human brain, one single "grammar without words" serves different higher cognitive functions.

Original languageEnglish
Pages (from-to)825-838
Number of pages14
JournalCortex
Volume45
Issue number7
DOIs
Publication statusPublished - 2009

Keywords

  • Broca's area
  • fMRI
  • Hierarchical
  • Syntactic
  • Visuo-spatial

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Neuropsychology and Physiological Psychology
  • Cognitive Neuroscience

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