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Sentential negation of abstract and concrete conceptual categories: a brain decoding multivariate pattern analysis

Marta Ghio1, Karolin Haegert1, Matilde M Vaghi2

  • 1Institute for Experimental Psychology, Heinrich-Heine-University, Duesseldorf, Germany.

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
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Sentential negation influences brain activity in semantic networks for both abstract and concrete concepts. This suggests negation modulates conceptual processing through syntactic and cognitive control systems.

Keywords:
fMRIgrounded cognitionlanguage comprehensionsemantic memorysentential negation

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Area of Science:

  • Neuroscience
  • Cognitive Science
  • Linguistics

Background:

  • Concepts are rarely processed in isolation, but within linguistic contexts.
  • Sentential negation (e.g., using 'not') interacts with conceptual information.
  • Prior research indicated negation affects action-related concepts in specific brain networks.

Purpose of the Study:

  • To investigate how linguistic context, specifically sentential negation, modulates abstract and concrete conceptual processing.
  • To examine the neural basis of negation's influence across diverse conceptual categories.
  • To explore the interaction between syntax (negation) and semantics (concepts) in the brain.

Main Methods:

  • Functional magnetic resonance imaging (fMRI) was employed.
  • A factorial design manipulated sentence polarity (affirmative/negative) and conceptual type (abstract/concrete).
  • Multivariate pattern analysis (MVPA) with searchlight analysis was used to decode brain activation patterns.

Main Results:

  • Brain activation patterns for both affirmative and negative sentences, encompassing abstract and concrete concepts, were accurately classified.
  • Neural processing of conceptual content is predictably modulated by sentence polarity.
  • The findings demonstrate widespread effects of negation across semantic representations.

Conclusions:

  • Sentential negation polarity significantly modulates brain activation within distributed semantic networks.
  • This modulation is likely mediated by the functional interplay of syntactic processing and cognitive control systems.
  • The study highlights the integrated nature of language, syntax, and conceptual representation in the brain.