Thematic role assignment in the posterior parietal cortex: A TMS study

Neuropsychologia
Chiara FinocchiaroGabriele Miceli

Abstract

Verbs denote relations between entities acting a role in an event. Thematic roles are essential to the correct use of verbs and involve both semantic and syntactic aspects. We used repetitive Transcranial Magnetic Stimulation (rTMS) to study the involvement of three different left parietal sites in the understanding of thematic roles. In a sentence-to-picture matching task, twelve participants were asked to judge whether or not a given picture matched with a written sentence. Pictures represented simple reversible actions, and sentences were in the active or passive diathesis. Whereas both active and passive sentences require the correct encoding of thematic roles, passives also imply thematic reanalysis, as the canonical order of thematic roles is systematically reversed. The experiment was divided in three sessions. In each session a different parietal site (anterior, middle, posterior) was stimulated at 5 Hz in an event-related fashion, time-locked to the presentation of visual stimuli. Results showed increased accuracy for passive sentences following posterior parietal stimulation. The effect appeared to be (a) TMS-related, as no effect was observed in a control, no-TMS experiment with eighteen new participants; (b) indepen...Continue Reading

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Citations

Mar 1, 2019·Frontiers in Human Neuroscience·Eduardo EuropaCynthia K Thompson
Aug 28, 2020·Brain Structure & Function·Lorenzo VercesiGabriele Miceli
Aug 21, 2020·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Ekaterina DelikishkinaGabriele Miceli
Sep 21, 2021·Frontiers in Human Neuroscience·Effrosyni NtemouAdrià Rofes

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