Journal
BRAIN AND LANGUAGE
Volume 219, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bl.2021.104963
Keywords
Discourse comprehension; Situation model; N400; P600; SPN; Mismatch-minus-match negativity
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Recent findings suggest that the right hemisphere is uniquely involved in integrating perceptual information from linguistic input to generate meaning. This study demonstrates that the RH contributes to language comprehension through integrative and perceptual processes, with positive ERP components potentially producing N400-effects.
Recent findings have revealed that the right hemisphere (RH) is uniquely involved in integrating perceptual information from linguistic input to simulate a mental model of that input. We extend on these findings by testing whether meaning is generated from such models. Participants (N = 37) heard auditory passages describing the visuospatial arrangement of elements into a perceptual representation of a familiar object, then judged whether a laterally-presented target word matched the object. We found a central N400-effect for left visual-field targets, suggesting that meaning was also accessible to the RH. There was no statistical difference for right visual-field targets. Principle component analysis of the data revealed that the N400-effect was driven by positive components. Consequently, the results suggest that i) RH contributions to language comprehension include integrative and perceptual processes that enable overall meaning to be generated from representations of discourse, and ii) positive ERP components may produce N400-effects.
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